I feel like I was so busy taking care of their affairs that I did not grieve and I don't know what to do?

Being busy taking care of things is one way to dull the pain of grief. I think that sending out thank you notes to those who attended the funeral was invented partly to give the bereaved a task.

So you've done all the busy stuff. What now? Are the flashbacks distressing? Can you deliberately dredge up some happy memories -- some from your caregiving days, and some from when Dad was healthy? I think it helps to focus on happy memories.

Have you considered a bereavement support group?

The feelings of anxiety, irritability, and anger might be helped by talking them over with a trained, objective third party you will not judge you. Have you considering counseling?

Been where your at. My whole family went one year after the other, my step brother 2005, step father 2006, my sister 2007, my mother, 2008, my brother 2009 and my dad 2011. Took care of every one of them. So it takes time. And support. I had none of that, so I went to counseling, and I did have a few girlfriends that where a great help. But time can and does heal you. I remember just a song I’d hear in the radio would put me to tears. But in time I’d laugh saying that was so an so favorite tune. You need time to grieve , and everyone is different. Take your time. But get in counseling. Yuki

I am so sorry you're going through such a tough time. I agree with jeannegibb. You need a support group or counseling to get you through this. Do that soon. (((Hugs)))

I am so sorry you are going through this. My Dad passed a little over a year ago. I was so anxiety ridden and every night I would feel like I was having a heart attack and things just kept flashing in my mind about him. I still miss him terribly, and the only thing that got me to this point of not so anxious and able to manage, is much prayer and only the love of Jesus. Best wishes to you and I will pray for your healing to come quickly.

Much of what you are experiencing could be me. You are not alone. I took care of my Mom in my home for 2 years, 13 years in her home before that. She was completely bedridden the last 7 months, would have frightening hallucinations at times, usually in the night. I spent many a night listening for her to call out that someone rang the doorbell at 3 am, there was someone in her room etc. It frightened me that she was all of a sudden this way. She needed insulin shots, had a catheter and many other health problems. I am still not over that and have flashbacks frequently. I had little or no help most of the time though the hospice nurses and nurses aides were good when they were here. I had to sell her home, and also was in the process of selling a family business when all this began so I was very busy taking care of things after she passed away. I felt many people, nursing homes she went to for rehab, hospitals, doctors, etc. failed me. This is why I have not sought counseling. Why would they understand what I went through? The grief counseling hospice offered were an hours drive to their meetings and they were pretty lame about offering help.They were young kids with a Master's degree and no experience as to what caregiving can entail. Any "friends" I had, some for the last 40 years, disappeared when the going got rough and came back later. No one offered to help with even little things when I went blind in one eye from a spontaneous retinal detachment during the caregiving. A knock on the door with a casserole or even a bag of McDonalds would have helped. I have anger issues towards half of the people I know. I feel no one cares or wants to help me. I hope you can find a competent person to get you through this time. Keeping busy and making plans and taking it a day at a time get me through each day. I guess with me time is the only thing that will heal. I pray a lot for better days and that I will find peace with what happened. Try to do even little things for yourself now as they add up.
I hope you find peace as well as you are a tremendous person for all you did.

Contact the Hospice you were with and ask them about their Bereavement Support and if they have a group you can attend or if they can have a Social worker talk to you.
If you have a Church or other place of Worship ask if they have a Bereavement Support Group.
They truly can help.
There is no time limit on grief and how or when we should feel grief or "get over it" (cuz ya never get over it!) Just as death is personal so is grief.
As a caregiver you were probably so numbed by all that was going on that you did not take time to recognize the grief in you. Now is the time to recognize it, accept it, and let it run it's course. How ever long that takes.
I will suggest that you stay busy. Call some of the friends that stopped calling you when you did not have the time to go out for a drink or dinner or a movie. If you have time start volunteering or do something that you have always wanted to do but did not have the time.
You need to find YOU again not a caregiver not a daughter.

So, so sorry, dear one. I lost four people in my family in a year (2016) plus had to move to a new home all while dealing with a mother going through dementia. It is overwhelming and difficult. A bereavement group through your church or locally will help you enormously. Very important: exercise. Go for quiet walks, go to the gym, but move to get all that grief out of your physical body. If you live in a safe area, walk after dark and just let those overwhelming feelings out. Best wishes.

Many good suggestions...grief groups are so very helpful...there are books of daily readings that help, as many said it often takes time...I would also suggest that you are so strong to have handles all this...very heavy stress... do you know some ways to relieve stress? be kind to yourself...deep breathing, massage, a vacation, new sport or exercise, mantra, warm water...and do a small ceremony by yourself of writing or speaking your words of letting them go and expressing your love and need for comfort....for some closure. Nurture yourself as you would a loved one. Keep letting go and filling yourself up. You are a good person.

There is a free support called Grief Share. You can go on line and find one near you. It was 3 years before I finally went. It helped me organize my thinking so my emotions were not so overwhelming.
"Why art thou cast down, o my soul? Hope thou in God" was my peace.

When my mother passed and left me in the position of having to assist my dad, I went to the cemetery and confronted her. I know it sounds stupid - but it worked.

I asked her why she stopped her medicines 6 months earlier - I asked her why we were kept in the dark about dad's problems - I asked her whatever popped into my head.

I ended with, "I'll do the best I can."

And for 7-1/2 years, I did the best I could by him, helping him through the loss of his soulmate.

Maybe it will help you to do something similar. It worked for me.