I thought I had my period last month but now I'm not too sure. It only lasted 2 days & my period has always lasted 3-5 days. Then I also had 2 days of spotting for the next 2 days afterwards. This month has started & I'm almost a week late already. I've noticed that I've been using the bathroom more than usual, I get tired more frequently, I've gotten some nausea, & also I've been getting quite a few headaches. My question is in the title... so is there a chance that I could be pregnant? Or is there a chance that this could be something else?