Frustration

I have been contracting all day since about 16 weeks but it has gotten worse. Went to labor and delivery and my contractions went from 7 min to every 3-4 min. It's not doing anything to my cervix so nothing they can do for me. I can barely sleep between the contractions, heartburn and vomiting. I haven't kept down anything solid in 2 days. I'm only 32 weeks with a history of pre term labor and I'm freaking out (which I'm sure is helping with my contractions). My doctor can only shrug their shoulders and say sorry, can't help you.