So I just wanted to ask, how irregular can my period be while on the Depo (shot). I first got depo on the 23rd of last month. I fell on my period the 22nd. my doctor told me that if I got the shot the first 3 days of my period then I was protected basically the same day. But I (just in case) waited a week. So this month I was suppose to fall on my period the 20th, today is now the 27th and nothing has come down. I took an at home pregnancy test today as well and It turned negative pretty fast. I've used at home pregnancy test before and they have been accurate for me. But this only makes me more confused. I know I can have less flow and even stop my period over time taking the Depo but I just started...