High sex drive, and high risk

Hello, everyone, there is something I want to vent out, and I’m high risk. I can’t have sex or orgasm, and my husband respects that. He wants our baby to be okay. Anyways, I know I’m not supposed to orgasm, but I am always horny and I know my husband won’t have sex with me, so I don’t say anything. When he’s not home, sometimes I masterbate and orgasm. I feel guilty later... and try not to. The longest I held it was 3 weeks without orgasm. But now, it seems like I’m becoming a chronic masterbator because im just getting horny. Always in the morning, afternoon, and not really at night. I’m worried about my baby now... I don’t know how to stop being horny. My husband and I have an awesome sex life, I get dress up sometimes and he is really good in bed, very tough and kinky. I miss having sex with my husband that I dream about it. He told me he miss it too, but wants a baby. We have 1 stillbirth, and 2 miscarriages under 2 months. This is our 4th pregnancy and things been good... I think should try to stop masterbating... for the sake of my baby. Do you guys have any advice?