Cramps underneath belly button?

so around the ending of my period i had sex, and also a couple days after that. ever since then i started to feel the little sharp cramps underneath my belly button i just ignored it because i thought it would be the diet i was on. well as days go more i started to feel it every day. sometimes it hurts to turn fast because i would feel it. for some reason i have this big feeling im pregnant. cramps are going all day and night every other minute all underneath belly button. tomorrow i am going to a place called meadows womens center to get a papsmhere as it was already scheduled for an appointment. and tomorow i will be asking them and telling them what has been happening