I had a period 12/1/12 - 12/7/12 then had sex unprotected 12/8/12 12/9/12 i started bleeding 12/17/12 could i be pregnant i aslo have breast milk?

Unlikely : You are unlikely to be pregnant if the 12/1 period was normal for you. However check a pregnancy test if you are concerned. Sometimes periods can come really early. If you have other symptoms such as pain or fever be seen by a doctor for it might mean an infection.

Check a test : Check a pregnancy test. Frequent unprotected intercourse is the best way to get pregnant. If you don't want to be pregnant you will need to change something. Please see a doctor to discuss birth control options as soon as possible. Until then use condoms.