Feeling vulnerable

My husband and I were fighting a lot after he found out he has diabetes. during that time my MIL made comments that we shouldn't have kids and should practice abstinence.

I told my husband that that made me uncomfortable and it isn't her place to decide. flash forward two months and she comes out for our daughters 1year party.

I'm 5 days late and decided to tell my husband because I usually on track like clock work. He asked me to take a test and it came back negative. After our daughters party we are all sitting there talking and he says, " guess what she(me) did this morning, you should tell my mom." I'm mortified and tried to play it off but he kept hinting at it and would not leave it alone. So I told her but I feel like it wasn't his place to force me or bring it up when I'm very worried about my health