Okay, so I'm gonna say everything that's happened so you can infer and please help me determine what's going on...

I had sex for the first time May 2nd, at about 2AM, and my period ended the day after. I got immediatly worried. After that I started reading all I could find about preg sympthoms and other effects I could experience. I haven't ovulated, or so I think, since I haven't gotten any mucus discharge, except for one on the 13th, and it had noticeable brownish fluid, and brown spotting. Today is the 18th, and I got light pink spotting , with a little red tinge. My area has also been itching like crazy, and completely dry. Any help?