Sorry that the business isn't working out this year, but :

for getting back to ttc!
I wouldn't worry at all about the antibiotics . . . they are short-lived in the system, most basic antibiotics are also safe during pregnancy and don't cross the placenta, and if you get pg next cy, you won't have a placenta right away anyway. There is nothing about the medicine that will hurt your eggs or egg quality!
GL - I hope you get lucky cy #1!