Wedding while pregnant

So before me and my fiancé found out we were pregnant we started to plan a wedding for the end of this year but just wanted to go to the courthouse to get married. But then we found out we were pregnant and decided to not have the wedding at the end of this year and just wanted to go to the courthouse. So 5 months past and we started talking about it more and thought it would be cute to get married on our one year of meeting which would be the 25th of this month. So we called and set up the day. So today I called my parents to tell them about it and my mom basically blew up about it when she knew that we wanted to do that. Basically how I am still on their insurance and I need insurance or I would be paying a lot for the baby even though we have thought about that and my fiancé signed up for insurance through his work. Then she goes I thought you were going to wait til the baby is born. Then you have to look probably for a new doctor cause they might not take the insurance. We know that. We are going to look into it. We just want to get married. Why can't people support that.