I'm 18 weeks and still getting cramps. Normal. :)
I'm 22 also my first! I'm 6 weeks along now and experienced the same thing got scared and ended up going for an internal scan cause I taught something was wrong but baby was fine! My midwide told me it was normal growing pains as everything was beginning to stretch :) if your worried talk to your doctor
I don't know why it posted so many times. My bad lol.
I'd say it's pretty normal. I had cramps all the time in the beginning of mine.