There are only 2 antibiotics that definitely affect your body's ability to deal with estrogen. There are a hand full of others that are thought that they might interfere, but it is not proven.
With that said, there are only a very low chance of pregnancy at best. If you can absolutely not afford to get pregnant, don't take the chance. If it will not be a train crash if you do get pregnant, take the chance as the risk is very low, depending what antibiotics you took.
Also watch out for a yeast infection when coming off the antibiotics.
Best of luck!