Hard cramps, back pain 25w

Hilary
I'm sure it must be a combination of round ligament pain and Braxton hicks, but last night I seriously question whether I should go to hospital or not. 
Heavy almost regular contractions in all of uterus and back for hours no matter my position every 8-10 mins. I remember having something similar with my DD at around 30ish weeks and back then doc said it was just bones moving and settling, body's way of adjusting to the weight of baby. 
This happened after two days of much more activity than I usually get. I'm much better this morning but back is still sore. 
Anyone else get these pains this early? What did your doctor call it? 
No bleeding, no fluid. Just bad bad period like cramps also in back.