Do you both go a couple months without sex or do you go through with it without wanting to? Not sure from the post.

I'm in a sexless marriage (once a year) so I may not be entirely the right guy to answer. But here goes. It sounds like you may want to consider going to your medical doctor or even a therapist to see if maybe you have a hormone imbalance. You could be way down on a hormone that causes you to feel this way. They can do a blood test and check on that. Sex drive is basically hormone driven. Low tostesterone (in women, yes) can lead to less want/need to be close.

do you and your husband hold hands, hug or do other touching things during the day? Are you affectionate to him or others in the family? Were your younger years with your parents affectionate or lacking? Just wondering if that could be part of it. If all was good there go check on the hormones.

The reason I mentioned hormones is I caught a segment on Dr. Phil a few months back where they had mismatched couples (he wants sex, she doesn't) and dr. Phil was mentioning the hormone issue.

Get your hormones checked now before the baby since you want to know if you have an imbalance that could throw off how you nurture and are with the young one as they grow. Hormones are also part of mothering, nurturing and how you act around babies too.