3rd trimester sex

So I know this may be TMI but in the beginning I was soooo sick I couldn't even think about sex with my SO. I'm now 34 weeks and ever since about 2 weeks ago I have had this insane sex drive. I have had other children but never had sex during those pregnancies. In the past week I have noticed that I have had my first "Real Orgasm" and well let's just say at first I was kind of scared because it was Very Messy. I thought my water broke but nope... Has this happened to anyone else because it wasn't just one time? Now it seems to happen every time we get intimate.