Cramps or implantation cramps.

How would you describe the cramps you got before found out you were pregnant? Also is it bad that I kinda hope I am pregnant...i wasn't trying to get pregnant god I so wasn't because I'm only 15 almost 16 but I kinda am hoping because I know of this family down the road who has fertility issues and can't get pregnant and wanted a baby since they got married 6 years ago and I kinda want to make their wishes come true..please help