Id say defo go in as your classed as high risk. Sounds like real.contractions to me. Best of luck to you.x
I know when one is starting because I get this dull pain in my lower back (ouch) and it wraps around to my lower abdomen and my stomach gets super tight. Its very uncomfortable and the pain is intense at times. I tolerate pain pretty well but this is a different feeling and I can't seem to control it.
I'd say yes go since you can time them that close and your high risk. What do they feel like? Still tryin to figure out if mine are real or not