Pain to the point of dropping to the ground

I’m 35 weeks pregnant. The past few nights I’ve been having the most intense pains in my lower right abdomen and pelvic region. It comes and goes, and extremely random. Last night I went to pee, as I stood up I went right back down. I was curled up in pain. After two minutes it went away, but it was so intense I felt like the baby was trying to come out. I couldn’t even get a sound out I was in so much pain. Is this Braxton Hicks or could I be dilating and not even know it?