So, how long exactly has it been since you were on antibiotics? Your wording wasn't very clear.
If it's been a month, you're most likely in the clear so long as you have been taking the pill daily at the same time without missing. If it's been less, you'll have to ask your doctor. Some antibiotics decrease the pill's efficacy for a week, others a month, and I'm sure there's some that are anywhere in between.
Consult the information along with your birth control, but generally it's best to give 14 days for peak efficiency.