Boyfriend problems! Help! ?

Well im currently pregnant and im going to be 30 weeks tomarrow and he never wants to spend timw with me like we did before i got pregnant. We have been somewhat distant. He claims my house is soo boing but yet he says his house is boring also. And then he told me that his ipod was going dead and that he would write me in an hour when it charges and i found out that he went to the beach with his cousin and a few girls. Is this his way of not wanting me? I just dont feel attractive anymore :( ive never been fat before and with all the stretch marks it just makes me cry to even look in the mirror. I just dont know what to do. Whem we argue he wont write me at all until i do.