TW: skipping eating

I have a somewhat “weird” fear of my heart just clogging up one day, or having a heart attack out of nowhere. I am 5’5 and 110 lbs. I mostly eat junk food/“healthy” frozen food because I am picky. But sometimes I’d rather eat nothing at all, because I don’t want to have a heart attack and die. So sometimes that’s just what I do. And then, in turn, I lose weight and experience what feels like hypoglycemia from time to time. I never really exercise other than the occasional stretches because I always feel extremely sick after. This is ruining me. I don’t know what to do. I don’t feel like it’s as simple as “eating fruits and vegetables” because although I love fruit, it’s hard for me to eat some veggies. I’m just tired all the time, my sleep schedule is ruined and I feel like I am dying. What do I do.