It sounds exactly like the pressure I had a few days before I had my son, I was about the same length along and he was my 2cnd. This time I am 33 wks and she has been head down since 29 wks and I think she dropped this week will find out tomorrow for sure. The pressure is so bad sometimes it is almost unbearable. Somethings I find that helps is laying down and also putting a warm clothe on it sometimes it helps.
Good Luck :)
I'm currently 37+1 today and I too have been having a massive amount of pressure in my pelvis area. I do know my son is head down. I ended up calling my ob because this is my forth and I was already dialated 3cm and 80% as of last Friday and I really don't want to miss my chance of getting an epidural (sp) or have him stuck and need a csection like I almost had my last pregnancy.
Sounds like your babies heads engaged
When bubz is head down I get massive amounts of pressure, almost to the point of pain and I'm only 29+5. But she is still moving around a lot and not in position yet. But I feel for you. At least it means your baby is in the right position :))