AITA for telling my mother in law that I am not going to stop having sex with my wife just because she doesn't approve?

My wife and I have been married for 2 years. Our sex life has been good. We have a good amount of sex and we have experimented with different things. We are happy with our sex life and we both enjoy having sex together. <br><br>In the summer we came up pregnant. We were super excited for our baby. We went for our 20 week scan and this is where the trouble started. At the 20 week scan you can request to find out the sex and that is what we did. We found out we were having a baby girl. We were over the moon. The day after the 20 week scan I got a call from my MIL. Asking me if we had found out the sex of our baby yet. I said we had and she was instantly excited. I told her that we were having a baby girl. There was a long pause on the phone. I asked if she was there and she said yes. She then told me that she had always wanted a granddaughter but that she had always wanted her to grow up in a good Christian household. I told her yeah that we believed in God and that we would have her grow up in the Catholic church. She then said that was good and we chatted for a while and said our goodbyes. <br><br>Two weeks went by and my MIL called again. This time she asked if I had stopped having sex with my wife yet. I asked what she meant and she said you know, having sex outside of marriage is a sin. I told her that we were married and that we were just trying to enjoy our lives and that we were gonna keep having sex. She said that I was a bad Christian and that I had better stop having sex with my wife or she would not be a Christian. I told her that it was not her choice and that we would keep having sex if we wanted to. <br><br>This started a massive argument with her. She started saying really horrible things to me. I hung up the phone on her and then called my wife and told her about the argument. She was very upset about it and we didn't talk to her for a few weeks. 2 weeks after our argument MIL called again. I told her I didn't wanna talk to her and she told me that I needed to listen to her and I needed to do what she said. I said no and she started saying horrible things again and I hung up on her. <br><br>After that MIL started sending me texts saying that I am a terrible Christian and if I don't stop having sex with my wife she will not be a Christian. I sent her a text back saying that I am gonna do what is best for my family and if you don't like it then you can kick rocks. That caused her to go crazy and start sending me even more texts. <br><br>Over the holidays my wife and I decided we didn't wanna deal with all the drama. So we went out of town for a week and we had a great time. When we got back MIL texted me again asking if I had stopped having sex with my wife yet. I told her that we had sex on the way home because driving makes my wife horny. That caused her to go absolutely crazy and now she is saying that I am the AH for not stopping having sex with my wife. AITA?