extreme cramping in early pregnancy!

I'm only like 7 weeks and 5 days pregnant. But I occasionally get cramps that last a couple mins and I feel them in my legs and back, as well as my lower abdomin. I haven't had any bleeding or anything the cramps are pretty bad. I had bad period cramps sometimes before I was pregnant, and these are similar to those. I have mild cramps every single day, and those don't really worry me so much, just the ones that I can feel in my legs and back. Is it normal? What should I do?