Baby, I've tried brazilian before. Then once I started this cycle, I din continue.
It is very painful and it also depends on the waxer. If she is experienced and good then it will be less painful. If not, it's damn painful! Once, i kenna an inexperienced lady and to my horror, there were traces of blood there when i wiped with my tissue! If they don't do it properly, can also cause in-grown hair and sometimes infection if really bad.
It definately is better than shaving as the hair growth really reduces after that.
But if I were you, i wouldn't take the risk now la. Unless it's an experienced person whom I have tried before. Also, it can be quite difficult to do this now when you are almost full term. The back part, need to turn over and all. I can't imagine how it will be done for pregnant ladies.