I was on the depo shot for about a year and then got off for a year and then in noverember 07 i got back on. I didn't bleed for 2 months and then I started bleeding and it has been over a week is this normal. BUt i have been been sick the whole time i have been bleeding. what does this mean is this normal. I have taken about 4 pregenacy test and they say negative so I can't be preganant. I just don't get it.