Could I be pregnant ?

Patient: I have been getting Depo Provera since January 2011 after my first child was born. I had an appointment on October 12, 2011 but did not go and I still have not gone. Ever since I have been on the shot after 4 weeks, I have been spotting every single day and have not noticed a real menstrual cycle. When my boyfriend came back from boot camp on December 28 2011, we have had intercourse almost everyday without protection. After Saturday January 7, 2012 , I have not seen any sign of blood, just a white cloudy discharge. I’m sure we don’t have any std or infections. Is there a possibility of pregnancy ? What should I do ?