Back contractions?

Can anyone who has had back contractions/labor explain what they felt like? I’ve been up since 3am with horrible lower back pain and no matter what position I get into nothing helps. It’s starting to radiate down to my butt and legs, just feeling super restless🥲 I have a feeling if I call to go get checked at the hospital they’re just going to dismiss it

She’s basically knocking at the door of my cervix and has not stopped moving either so it’s all just adding to the discomfort