Yep - sounds like ligament pain to me. I got it sooooo bad with my first pregnancy I couldn't move wihtout screaming for about 2-3 days. I spent a monring in emergency, they mucked me around for hours asking about bleeding etc, and then sent me home, told me not to be a hero and take some panadiene (forte if required).
It is soooo normal unfortunately, and mine lasted for about 1w badly, and then eased away again. I got it again this time, but only after I had been playing netball.

I go to an osteopath for my aches and pains, and she works wonders for me. Finding someone who can help now (and therough the next lot of aches and pains....) is a good idea