Cramping

I'm currently 7w1d and this is my 3rd day of having just an achey feeling in my pelvis. Every once in a while its more like cramps but then just goes back to a dull ache. Is this normal? Everything I seem to read says "normal" is light intermittent cramps but the dull ache is persistent. This is my first pregnancy and every little twinge worries me. I'm not having any bleeding. Just wondering if anyone else is experiencing this or has in the past with a good outcome.