Since you've become the sole caregiver, have you caught colds more frequently and have they been worse than normal? Is this stress related?

I used to catch a cold maybe once every 6-7 years and it would just be the sniffles and a couple of nights of poor sleep. Within the last 4 years I've caught the bug once; last year it was 2X; and they have kicked my butt. They've been so bad that it I was in bed for 3 days straight, sweating thru 3 pairs of sweats, nearly impossible to breathe thru my nose, watery eyes that looked like I was crying for a week, couldn't keep anything down but plain toast dipped in homemade chicken broth (I make & freeze my own stock ahead of time for Mom and now for me when I get sick) and dizzy for the entire week of sicko hell week. The worst was the first time I got these sudden "shocks" every time I moved faster than a snail & it Did feel like getting shocked, from head to toe and the throbbing in throat and tongue. I could feel my pulse in my tongue and that was weird the first time. It's now to the point that a few days before I take Mom to her Dr appt, I start taking cold meds to feebly attempt to stop from catching one. Yah, I took her Friday and yesterday I woke up with my nose stuck to the pillow. Looks like I'm going to miss work this week. Does anyone have a mobile plastic bubble I can use? haha *cough*