Pressure in pelvis

Is it normal to be feeling so much pain in my pelvis/vagina? Really between legs when I walk or move in bed or really do anything? I'm 29 weeks today and it hurts so terribly bad. I thought this type of pain came later...so I'm a little worried. I've been having it for the past 4 weeks this bad. I'm im so much pain down there when I roll over in bed :(