Relationship ending?

So I’m coming up on my 2 year anniversary I am 8 months pregnant and we have a 1 year old son... we go weeks and months with out having sex and I’ve tried saying how I feel and hearing his end out... sadly he lies and says he tried to have sex with me while I was asleep after me asking daily why he don’t have sex with me ... why would he wait til I’m asleep ... honestly I believe he isn’t attracted or is seeing someone else or am I just crazy?!😭