Someone help. It’s stressing me out.

So I had a medical abortion a month ago and my bf ended up telling his mom about it. Ever since she’s found out I was pregnant and then had an abortion EVERY time and I mean every time she talks to him or sees me she always asks if we’re doing stuff to prevent pregnancy. And if Im gonna get on birth control EVERY TIME I SEE HER. It’s getting very annoying to the point I don’t even want to be around her. I don’t want to go off on her because that’s disrespectful but I don’t know what to say to her to have her stop asking about how I am or if we’re being safe. I know she cares about me and I don’t want to be rude to her but every time she asks if we’re being safe it reminds me of the decision I made😭 What can I say to not come off as in a rude way but enough to have her stop? I feel like if I don’t do exactly what she wants me to do she judges me and gets upset.