could I be pregnant again?

Hannah
I had my first baby December 23, 2016. I got my first period feb 4 and it lasted about 7 days. About 2 days later me and my husband had unprotected sex and I'm not on any BC. It's march 6 and I still haven't had my period. Is there a chance I could be pregnant? Even though it was so close to me being on my period?