Labor?

So yesterday I started having mild lower back pain and by bedtime it was really hard to stand/sit. I ended up finding a decent position to go to sleep. Woke up around 3 with more back pain and mild contractions. Some contractions I could feel in the front and others I would only feel in he back however I could breath through them. I got up around 5 and sat on my ball which helped my back pain. I've been walking around and doing random things around the house. Still getting contractions however they aren't stopping me from what I am doing. Very mild and not painful. If I'm timing them correctly they are coming anywhere from 5-10 min lasting about 60 seconds. My back pain is now moderate and if I sit the back pain gets worse. Is this labor? I'm just skeptical cause I'm not in crazy amounts of pain that ladies talk about. At what point do I go to the hospital? I'm 38w4d and haven't lost my mucus plug or anything of that nature. I just don't want to be sent home from the hospital.