My last period on the 4th of July , I had protected sex July 5th (aroung 2 in the morning). Yesterday (july 7th) I noticed a brown discharge that I usually see when my period ends. Could I be pregnant? We used a condom but he ejaculated inside the condom. I'm young and not very experienced. I've been having stomaches the past few nights and sometimes it feels like I'm about to throw up. I can't just go buy a pregnancy test became I'm only 15 and my mom doesn't know about me having sex. So can the stomaches , and the brow discharge 2 days after I had sex result in me being pregnant?

The brown discharge is just what left of your period nothing to worry about on that, and being that you had sex the after your period ended I doubt that you could be pregnant because you were not ovulating. But if want to be sure ask if your boyfriend can get it for you.