My sex life

Has enyone else's sex life gone from really good to hardly existing? B4 me and my partner got pregnant last year we would have sex 2 or 3 times a day and Eving after it was daily some times 2 times and now we hardly have sex at all be once a week if that we've been together a year and 5 month I fell like he don't want me no more as I've pot on weight I was a size 6 and went to a size 16 then got it down to size 10 but he hardly riches me now and I'm really self conscious. Has enyone else's sex life gone down since getting pregnant???