HELP!! 35 weeks and 5 days and having super bad period like cramps

I’m 35 weeks and 5 days FTM and I’m having pretty bad period like cramps. This all started about 4 days ago with lightning crotch and the feeling someone kicked my vagina plus some cramping. It slowed down and wasn’t to bad so I let it go but now for the past 24 hour I’ve been having super bad period like cramps to the point that I was woken up multiple times trying to sleep. I don’t know if I should be worried about pre-term labor? Anyone else have experience and can shed some light? And if you had these symptoms how long after did you have you baby?