My girl has VERY irregular periods, like her last one was only 3 days long, and she hasn't started yet. She's all worried she's preggo right now, I'm not but she is. But is that normal for a 3 day period? She's not on Birth control ethier to help her have regular ones. Whenever we have sex I pull out before I cum, even with a condom on, so I'm not worried. I never put it in her without a rubber on. But do a lot of you females here have very irregular periods? I'm thinking she's over reacting to things currently.