35 weeks pregnant, steady contractions every 4-5 minutes, no pain?

I'd call your doctor or labor &delivery if it is after hours. They will ask you about your symptoms and see if you should come in or not. I had this happen to me at 38 weeks and they were very regular, but it turned out that they were being caused from dehydration. These were not causing me to go into labor, but they were quite uncomfortable. Good luck!