I had my period on the 6th of November and it lasted about 5 or 6 days. Me and my boyfriend had unprotected sex on the 14th of November. A week or so after that I started spotting brown and pink/red. It was really light, which is weird for me because my periods are usually extremely heavy. I've been sleeping all the time, and have been having horrible mood swings to where I feel like it's not even me. Could I be pregnant?