Feeling the love

So my boyfriend and I have been dating for a long time(2 1/2 years) and we've been doing stuff, but haven't had sex. Well I just got off my period yesterday and lately I haven't been in the mood to do anything. Well I have but my vagina hasn't.... I want to do stuff, but when we get started it doesn't feel amazing like it normally does and it happened again today. He is trying to help me out and switch things up to feel better, but it just isn't happening for my lady parts lately. Is this normal? Does this happen to y'all too????