Depo shot

Okay so i got the needle in October 6th didn't get a period until last week and I have now had it for 9 days. My periods never last longer then 4 days. and I've had my period since I was 8 or 9 so I know my cycle. Does anyone else have this problem or any suggestions? I don't exactly have time to go to the doctors. But it is causing me a lot of pain and emotional break downs. I haven't wanted to leave my bed for the last 4 days.