I have received the depo shot twice now before I used to have my period for 3-4 days. After I received the depo shots I would very rarely spot. I started bleeding April 4th and it hasn't stopped its been about 2 weeks and I don't know what to do

This is excessive and unusual bleeding. One of the "If you experience this symptom please see your doctor ASAP" side effects. Which is to say, get to your doctor ASAP.