Ok so I had protected sex on August 27th. It was also my first time and I don't take birth control. I've been pretty paranoid the past few days and have questioned getting plan b just to be extra extra safe but I didn't because the condom never broke or anything. I'm also on track to start my period this week but it actually started today, just a couple of days early. Does this mean anything regarding pregnancy, is this common, or am I just being really paranoid? I'm really confused and a bit worried.