Bailey - depending on how severe the pain is, go and get it checked out by a physio who specialises in pregnancy-related issues. It can get quite bad - some women have to use crutches/wheelchairs. Hopefully, this won't happen to you and that is worse case scenario. GPs often poo-poo it as "just the aches and pains of pregnancy". I had it from Week 28 and it's only just going away now, four months after the birth. Clinical pilates REALLY helps if you feel you need it.