Cramps

This is my first pregnancy, and I know cramping in the first trimester was normal since it was my uterus stretching and my placenta attaching itself...but in the second trimester is it normal? I'm 15 weeks pregnant and was wondering if it's still normal. The thing is, is my period cramps were bad made me cry, but these cramps are little lighter. So far no spotting which is good but I just don't know if cramping this far along is normal..