When to go in?

So I woke up from the pain of cramps lasting for about 30 seconds. I felt like I had to poop so I went but as soon as I was done another set of cramps started. Are these contractions? I'm laying in bed trying to deal with them and when they come I find myself wincing until it slowly goes away. I don't feel anything in my upper abdomen so this is why I'm unsure. They're also making me feel a slight burning sensation in my lower back and I am just here laying in bed not wanting to wake up my husband unless we have to go. I don't think I will fall back asleep because I tried and then they came again waking me up. I would say they're every 10 minutes but I'll confirm this in two minutes if it happens again (OH HERE IT IS I FEEL IT ALREADY OUCH!!!)