no sex for 20 weeks

So since I've got pregnant me and my partner haven't had sex! 
So last night we been out enjoying ourselfs we get back and I try to give him a hand job.......... wellllllllll who told me to do that!!! 
All I got was ahh your hands are cold! Don't don't your hands are cold! Then he took me in his arms and held me whilst we slept!! Like WTF!!! 
I'm convinced he is chatting to someone else but he denies it! 
No sex for 20 weeks!!! At this rate I'll go crazy! I'm
Fuming! And so upset!