I've been feeling nausea for two weeks and been having lower back pain, my period was suppose to come on 2-3-2011, it didn't. Now on 2-6-2011 I had minor cramps and started spotting. It went away but came back, now (2-7-2011)it's a little heavy and really dark. My period is never late, I don't know if I'm pregnant. Is this implantation bleeding or a late period?

Most likely it is your period. Even the perfectly regular woman has an off period once in a while.

I'm still not sure, I don't like to write a lot, but my boyfriend doesn't wear condoms and he's been leaving it in, so that's why I'm unsure, my period has been dead on two years

I've read that implantation bleeding would happen a couple days before or right at the time of your period. I know for me, it happened 2 days before. It was only when I wiped and it only lasted a day, but didn't show up every time I wiped.

My period was suppose to start Saturday the 5th, but I started spotting Thurday, a very pale pink color all day, then on Friday it turn red but very light, only very light bleeding not enough to fill a pad, by the end of Friday it's been pink and red and brown, today( Saturday) it's brown and red , mostly brown, I've had no cramping, so is it most likely I'm pregnant?