Is this pain normal?

I'm 31 weeks pregnant with my second child. Never has this the first time.

Throbbing/searing/intense pain in my groin/crotch area under my bump. Every step I take it get worse, and when I lift my legs certain ways its extreme. To the point I feel nauseated with the pain. It goes away when I sit with my feet up.

I have a good pregnancy pillow I sleep with. I wear a pregnancy band as long as I can stand it but after a while it dosen't help anymore. I tried stretches which didnt do much.

From online searches I think this is the "lightning crotch" people talk about but it's so constant! Is there anything else I can do?