I'll Be 18 Weeks Tomorrow And Still Have Some Cramping Every Now And Then, Its My First Too So I Just Assume Everything Is Expanding To Make Room!
Cramps are normal as long as they aren't painful and your not bleeding. Its your uterus stretching.
I'm 18 too. Cramps are completly normal as long as there's no bleeding :) if they're really bad call your doctor. Good luck! X