What do you think? Pregnant or not?

Okay, so I lost my virginity in February. That month I had my period on the 6th and had sex on the 19th. I'm kind of concerned about being pregnant. I haven't really had any symptoms and I've had a period each month since then but my last period was light. My stomach seems like its getting a little hard but then its still all soft and squishy. Right now im having lower abdominal psins but idk what its from. Oh btw, it was protected...we used a condom. Do you think I'm pregnant or just really paranoid?