Pelvic pain?

I had mild period like pains around 32 weeks and phoned the hospital - they asked me to come in to monitor for contractions. Thankfully there were none and baby was fine, however I did find out I had moved from 5/5 to 4/5 engaged, do I wonder if it was baby pushing down? Dr's and midwife could not tell me what was causing the discomfort x

If it's menstrual crampy feeling, it might be time to check in with a doc.