I stopped taking birth control mid pack and now i'm having withdrawal bleeding right after having unprotected sex. could i still be pregnant?

Yes, but...: It depends on when you stopped your oral contraceptive and when the unprotected sex occurred This might also be withdrawal bleeding from stopping the pill in mid pack. You can do a pregnancy test, but if the sex was recent try Plan B first. Your initial period may become irregular with the use of Plan B.

See below: If you had sex within 72 hours, take plan B. If you miss your period by 4-5 days, do a home pregnancy test. If the result is negative repeat the test 4-5 days later unless you get a period by then. Use first morning urine and follow the instructions for the test carefully. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex if you have sex. Get HPV vaccine