Major pain

I'll be 32 weeks in a couple days an I've been having serious pain in my back an lower abdomen its a sharp pinching pain in my tail bone it hurts to walk or lay down on my back an also a extreme sharp pain in my lower abdomen it hurts to even sit up in the mornings to get out of bed also been cramping a lot but not consistently I told the doctor (not the one I usually see I'm in rotation) that I thought my cervix was soft an might be opening but he didn't want to check me I go see one more ob before I'm back to my doctor I will be 36 weeks next time I see my doctor so I'm going to see if he'll check me an start trying to get this baby out its killing my body what are some things I can do to help another thing is I've been having weird discharge like feels like little trickles but not real concerning