Can’t get in the mood and I’m going insane 🙃

So I’m 22 and and my fiancée is 26 we’ve been together since I was 16. Lately we had been having some ups and downs and I think it is just reaaallly starting to affect my sex drive. I feel horrible because I’ve been to the doctor to figure out things, like times when it’s painful and others when it’s not, I could be in the mood and it could hurt and then other times if I’m not in the mood it doesn’t hurt, and vice versa there is no like pattern. He’s been patient and understanding for the most part but LORD if I do say “I really don’t want to have sex I’m not in the mood” his reaction is always “you never want to” and it makes me feel even worse. Especially when there are times I’ve given in (more often then not) and had sex anyways. I’ve tried telling him not to say that to me because it makes me feel worse about it and he always seems like he understand but then never changes his reaction if I do tell him no sometimes. I’m at a loss. Or what I can do to get myself to be more sexually active. I e tried the whole “run a nice bath, get lingeries, have dinner dates” and all that. I’ve tried gels that are supposed to help pretty much anything you can think of. I have no idea what to do and I feel like he’s getting more annoyed lately. Idk if maybe I’m slipping into depression again or what. Any advice?