Has anyone else experienced this?

Hubby and I found out that I'm pregnant at about 5 weeks along (I'm 10 weeks now), and afterwards, he just about stopped our sex life. I've tried a straightforward approach where I just tell him I want to have sex, and he says sure but goes straight to bed. I've tried buying new lingerie and parading around in it, sending him ~pictures~, ect, but he says I look nice.

The only time he wants to get "intimate" is when he wants head, and I'm thinking we'll start w that and work into sex, but he tells me that "we'll do it in a minute, it feels good when you do it like that, keep on for a few more minutes" and then he comes before we have sex, and I'm left unsatisfied and upset because he wont have sex w me..