I use to get 3 times a week at least now that i'm16 weeks pregnant my husband won't make love to me!

I am recently married [8-4--07] to my man of 19 months, before we made love 3 times or 4 a week, i am 4 months pregnant & i desire my husband physically, but he shows no ual interest in me at all no matter what ido. he only been with me physically 3 times since married, took him 8 days to even touch me after we married. the thing is he doesn't let me seduce him, or even kiss him,or talk about . he says that he doesn't think about it & that i always do. i don't know what to do, this is really getting to me, and yes i tell him this too. please i need advice.