Growing Pains

I am 30 weeks and have been extremely sore and uncomfortable for the last few days. I have pain across the bottom of my belly, almost like if I did a super intense ab workout. The pain is constant and gets worse if I sit for too long or if I sleep on either side. I experienced similar pain about a month ago but it wasn’t nearly this painful and only lasted about half a day. I regularly have my round ligament checked and loosened by my chiropractor so I don’t think it is that, as its not the same pain. Is anyone else experiencing this? Is there anything I can do to relieve it?