Double uterus with only one being Viable

I'm 28, I have two daughters. During my second pregnancy I found out I have a double uterus. My doctor told me that everything was fine because my daughter was on my right side. She told me if I was ever to get pregnant on my left side then I would miscarry. In December (8 years after I had my 2nd daughter) I became pregnant again. I was so excited after ttc for almost 6 months. The dr said everything was great and the baby was on my right side. Little did I know she was wrong. The baby ended up being on my left side and I lost the baby. Now I'm struggling again ttc but hoping that what they say is true that you switch off ovulating on each side every month. My dr checked last month and I was ovulating from my left side. She checked this month and she couldn't see anything but told me to give it a try. I'm so nervous that what if I didn't switch off. I'm just looking to see if anyone else is going through the same thing as me and has or had these issues.