33 weeks today and i think i am going into labor

I’ve been in and out of the hospital for the past couple of weeks due to someone rear ending me and then leaving the scene. Anyways. When i was there a couple of weeks ago i had already started dilating and i was having contractions. They have given me shots of brethine (don’t know if that’s spelled right) and that would briefly stop it. But now for the past hour or so I’ve been in pretty bad pain. My entire back is hurting like kidney pain and I’ve had some cramping. My stomach feels consistently hard though so i don’t know how to tell if I’m having a contraction 😅 first time mom if you can’t tell. Any advice would be great. And i can feel him moving a lot.