Hemorrhoids and constipation-tmi

As embarrassing as it is, I haven't had a bowel movement in weeks. Tonight I noticed while trying to go to the bathroom that my anus is swollen probably to the size of a grape and it's pretty sore back there. I've tried stool softener, adding as much fiber to my diet as I can take, and drinking more water. I'm 38 weeks and I don't see my doctor until Monday. Are there any over the counter medications I can take in the mean time?