Hi I'm 17 and female I got the depo pervara shot and I started the shot back up and I started to bleed two months in the shot I did not bleed on the first month but started about two weeks ago on the second month is that normal?. please answer I need to know if I'm pregnant or not

Only way to know if you are pregnant would be for you to take a pregnancy test. Depo Provera can cause irregular bleeding for some women so that may be the cause. Since it has a pretty high success rate of preventing pregnancy, although pregnancy can happen, odds are it is from the Depo and not from pregnancy.
Good idea to try a test so you can know for sure.