36 week pain

Last night I woke up around 3am from pain. It was dominantly in my back and felt like my pelvic bone was being stretched out towards my lower back. Occasionally it would shoot to the lower front of my stomach. This happened consistently from 3-5ish but has since slowed down and now I just feel very sore and sensitive in the front of my belly. Any advice? I am 36 weeks today.