Vagina pain!!

Ok so I am 36+2 weeks pregnant with my first. Since this is new for me i don't know what's normal or what isn't. When I walk I feel a sharp tingly feeling inside my vagina as well as some period like cramping I also feel nauseous and I have diahrrea. I was told by my doctor a few days ago that I was 1 cm dilated. Not sure if this could be a sign or if it's normal at this stage for these symptoms. Has anyone experienced this that can enlighten me on what I am feeling?