Preterm labor?

I am 34w2d, and have been having BH for at least the past 2 hours, since I woke up. They have been 15 mins apart. Last night I was having quite a few of them but they weren't regular. My BH this morning, haven't been painful, but are definitely noticeable and consistent. I have been in the bed, taking it easy. But I also just had a loose bowel movement... I am a ftm, so I feel like I am overreacting some! Then again, I don't know what to expect. I thought if I was in labor that I would be in pain? But no pain, besides in my back, very dull, very mild ache. Not what I presume to be back labor.. Anyways, any advice? Do I just take it easy & see if these contractions pass or get worse?