My period was a week early and only lasted 4 days (usually it's 5-7 for me). I have noticed that my anxiety has been a lot more sensitive than usual and my husband and I have both noticed an increase in breast size (pudging out of my bra). I am not on birth control, but we use the "pull-out" method ALWAYS. I also have noticed an increase in my heart-rate, but that could be my anxiety. I'm just wondering if I am more than likely pregnant or if something else could be causing these symptoms.