I am 25 years old with a 7 year old and a 22 month old. I have been on Depo since March of 2009. About a month ago my husband and I had sex then my period came. I thought it had gone away so we had sex again just for the next morning to find it was still on. This lasted about 3 weeks. We returned to our regular sexual activity. Now it's like a month in a half later...I am 11 days late missing my depo shot but I am concerned now because I am feeling all the symptoms I was when I was pregnant before. I don't want to panic because I know pregnancy symptoms and pms symptoms can mirror eachother. So my question is how likely is it to get pregnant on the shot?It's happened once before with me...I just can't imagine it could happen twice! HELP!