Sex life changed after marriage and baby.

I recently got married and found out I'm pregnant which is amazing. But the thing is now my husband doesn't want to do anything crazy in the bedroom. We use to do the most wildest things now that I'm his wife and mother of his child we only have missionary sex. He doesn't even want a blow job. He says it's disrespectful for a mother to do, he had no problem with it before? Help.