constantly saying I'm cheating on him.

My husband and i are 32 and 33, we've been together since our teens and had our oldest at 18 and now have 2 more kids, just to give some background.

well ever since we got married (at 21 and 22) he has made snide little remarks about me going to see some guy at the gym or the grocery store or target or work a job or whatever. I've never given him a reason to think I'm cheating. i sit at home with my kids all day and watch youtube or write during my free seconds. but its gotten to the point I literally go nowhere until he gets home from work or has a day off. our toddler doesn't even know how to play at the park....

he has free access to my phone and my computer since i'm not hiding anything but when i say to look through them if he's so worried he gets pissed off and says he shouldn't have to and i should be telling him EVERYTHING....but i literally sit at home all day, clean, make food and play with kids or talk to my mom...or the school if they call me. i text my step daughter or one of my aunts or uncles and i literally have no friends. none. because of him.

then to top it all off i have a really painful condition (adenomyosis if you wanna google it but it has to do with the uterus) and because of it i'm exhausted the majority of the time and we have like a 8 day window to do any sort of adult time it's been this way for 5 years but he still ignores it, tries to coax me into having adult time and when i say no he gets pissed and tells me i'm cheating and to go fuck the guy i'm talking to. and i'm just left there like "dude i'm in fucking pain!"

idk what to do at this point because im at the end of my rope about to find some way to leave him even though i have no money to leave...and i honestly don't want to if i don't have to but idk how to stop this shit.