I am currently on depo provera and have been bleeding for about 7 days now and had unprotected sex could i be pregnant?

Not likely: Depo Provera is very effective contraception. If you are getting your injections on-time, the risk of pregnancy in a year is less than 1 in 500 with unprotected intercourse. Your chance of pregnancy is very low. However, Irregular bleeding is one of the most common side-effects of Depo Provera and this is more likely what you are experiencing. Get a pregnancy test if concerned. Best wishes!