I’ll turn 35 weeks this Friday but for the past 3 days I’ve been experiencing period like cramps that are really uncomfortable and sometimes radiate to my lower back. It’ll

Last about 30 mins and go away and come back all theoughout the day. And i feel like if she’s pushing on my pelvic and it’s uncomfortable. Anyone experience this and were fine? This is my second and I felt this around 39w but I had back labor so it was different. Called my nurse but she didn’t seem worried but I’m worrying a little any opinions???