Is there such thing as too many Braxton hicks contractions.?

Starting last night around 10 pm I got a lot of contractions. On a 1-10 pain scale, 10 being the worst, they were about a 6-7. My stomach was tight and then at one point I felt a pulse like feeling. But it wasn't my pulse because it was too slow. I googled and found that maybe the baby had hiccups. I don't know though. Anyway, I had these contractions again this morning. I had a few when I woke up in the night and I'm assuming I probably had more but slept through them. 
They have slowed down today but I'm still having them. Last night I had them about every 8-10 minutes and they lasted anywhere from 15-30 seconds. 
By the way- I'm 31 weeks 3 day