Confused

I got off my period (May 27th) and had a lot of unprotected sex (pullout) for the next few days (until May 31st). Haven't had sex since then. A week after the last day I had sex (almost two weeks after ending my period) I got pink spotting for a few hours. Haven't had any spotting since then but I've had some cramps, sick feeling, headache, acne, lots of gas, and a few other issues. Could I be pregnant even though glow says I didn't ovulate until the last week?