Ok about a week ago I had a sinus infection. For two days i took some Keflex twice a day that I had left over. It wasnt helping , I found a bottle of cipro I had left over and I took one. Thats it. A few days ago my boyfriend starts having symptoms of chlamydia or gonnerea ureathra hurting, discharge etc. I have no symptoms. We have only slept together once in the last couple weeks. Anyways, I went and got tested and I have bacterial vaginosis. I have not been with anybody but him. He is trying to say that the antibiotics I took got rid of the std and that I gave it to him. This is not possible right?