Hi mama! At 36 weeks with increased discharge and cervical softening, it's definitely worth checking with your OB right away, could be normal pregnancy stuff, but the combo of discharge, belly and back pain, and the fact na soft na cervix mo needs proper assessment kasi sometimes these things signal preterm labor or other things na need monitoring talaga. A few of my mum friends had similar experiences around this time and honestly, peace of mind lang talaga when the doctor confirmed everything was okay, so don't wait, go get checked ASAP!