| Yes you could be pregnant. Since you were on the shot for a shorter amount of time, chances are it didn't take as long to get out of your system.(Though it takes others longer, even with just one shot)Since your periods have been on time and normal for the last 3 months, I think chances are good that your system is pretty much back to normal. And since anytime you have sex(with or without birth control) there is a chance of pregnancy, your chances are pretty good. However, it could just be a late or missed period. Not uncommon. I'm afraid the only way to tell is to get a positive test result.(whether it be blood or urine test) When you say you are a month late, does that mean you were suppose to start your period a month ago, and it still hasn't started? Or do you mean that you just missed your first period? Either way, take a test. If you were suppose to start a month ago and still haven't, it would be wise to go see your doctor. |