Sex while pregnant ...

Why doesn’t it feel the same anymore !? Like I don’t even wanna do it . It doesn’t feel good . I’m mostly sore the entire time an can not wait till it ends . Super uncomfortable ! This sucks because I think about sex and my mind wants it but my vagina does not !!! I let him get some maybe once a week 😣 he doesn’t complain tho he’s normally really tired from working in this heat anyway . I’m 25 weeks . It’s been this way my entire 2nd trimester