Pink discharge at 36 weeks?

Haven’t had sex for a few days now and I’ve never had blood or anything after sex before. Had some pink discharge today enough to coat the toilet paper when I wiped. Some yellow/clear mucus in there too (been having that for a few days now). Also been having bad back pain for last few days and lots of lightening and pressure, as well as more frequent Bowel movements and nausea. Could these be signs that labour is coming? Anything I should look out for just in case? Sorry anxious FTM here