back cramps & pregnancy?

Did anyone experience lower back cramping as an early pregnancy symptom? I usually cramp before my period but this time it feels *different*, ya know? 
I have a few other symptoms such as: extreme fatigue (ugh, it's killing me), increased number of Montgomery tubercles, and now lower back cramps.
I'll be taking a pregnancy test in the next few days, just hoping to hear from a few of you on the matter.