35 weeks, is this normal?

Low back pain and mild cramping. The back pain is consistent but the cramping comes and goes. Noticed sticky discharge and this baby is feeling like it’s going to come out of my vagina, the pressure hurts. I know I’m 50% thinned but cervix is still closed. Tylenol isn’t even helping. Walking has made it worse, I have a heating pad on back but that isn’t helping and the pelvic pressure comes in waves.