Soreness in the Crotch area..

Question for you ladies, I am 31 weeks and I noticed two days ago this soreness or a bruised feeling down there. Like Someone punched me in the crotch. Hard to describe but it hurts when I have to put my underwear or pants on because it's causing all this pressure on that area because I have to stand on one leg. Any movement with my legs seems to cause pain. At night it's hard to roll over to one side cause it's painful! It hurts to use the muscle in that area I guess?? Has anyone gotten this or know what I'm talking about?🙃