J just finished my 1st pack of birth control pills & had unprotected sex. I missed a day or two here and there, can I still get pregnant?

Yes. The chance of getting in pregnant on birth control pills is about 3% a year if you take them perfectly. If you miss a day or two here and there, the risk of pregnancy is about 5% per year. Its still low but your chance of pregnancy is slightly increased. If you miss two days in a row the risk is even higher. Best wishes!