My boyfriend and I have had protected sex a few times a week ago. He used a cond each time and he said it never broke. My period was about a week early, though it's usually really irregular. It started off pink/red and brown, very light and then went to a normal red blood color and brown, ranging from light to medium. Some days I didn't bleed until the night, sometimes I bled heavily for an hour then stopped. This carried on for a week. But all throughout that week and now, a day after, I was extremely nauseous.thats what's been worrying me. I am not on the pill, but I'm 15, have been super stressed. Is there a chance of me being pregnant?