I'm 39 weeks tomorrow. I went to the doctor for my weekly appointment this morning and they said I am 2cm. I've not really had any regular contractions, but tonight I am having some pretty significant pelvic pain/pressure to the point it hurts to walk and I'm holding onto walls because it's hard to lift my feet. I know some discomfort/"lightening crotch" pain is normal, but I'm guessing this much is not?