Girl,I have all the same pains in the pelvic / vaginal area -- not sure if baby is head down or not, but lots of pressure down there, like if I pushed it too hard weight lifting or something. Hurts the most when I first stand up, and then after walking too long. My doc also recommended a maternity belt and I haven't gotten one yet. I do think that the way it works is by supporting your bump and extra belly weight, which then takes weight / pressure off your pelvic area.
It hurts but I think it is normal. Relaxin hormone is making everything loose and tender down there...