Anyone struggling getting back in the workforce after longterm caregiving?

I am terrified of being out on the streets! It has always been hard for me to find a job! I have had to depend financially for my Mom during her time with Alzheimers while she grew increasingly dependent on me otherwise! Now she is having to go from short-term rehabilitation (for wandering across the house and them falling and breaking her wrist) to a long-term assisted living or memory-care facility. I am now in the job market after being completely out of it for four years taking care of her. I have always been overweight , but the stress from taking care of her has caused me to balloon up weight-wise and I now can fit into any of my clothes due to the stress and the bad eating (taking her out at night to alleviate her sundowning episodes at night). Now, no one seems to care! They say there are plenty of jobs, but stores are closing left and right!