Hi Sarah, sounds like you have joined the club! Sounds very similar to the ligament pains that i've been getting. For the first time it came on with such horrendous force that i couldn't move, the next day after sitting on the couch all day with panadol and heat packs it was gone. I have had it back in the past few days but nothing nearly as bad as it was - aggrevated by physical activity (not even hard activity). If it persists or comes back it may be worth giving your OB a call and just mentioning it to them but does sound normal. horrid isn't it! Hope it stays away for you.