I told her some about exposure but didn't tell her it was a man and that I am bi
This isn't an STD, and you really weren't at risk for STD from such an exposure anyway. It is conceivable you acquired a strep infection from your partner -- but if so, it's most likely from the kissing and has nothing to do with his pimples.
In other words, I see no reason for you to doubt your doctor's diagnosis and treatment. You should contact her office if your symptoms don't continue to clear up or if you have any other questions about it.
BTW, you did tell your doctgor about your sexual orientation and this exposure, right? If not, you should do so now. Never tie your doctor's hands by not giving complete health information, including sexual details.
Dr gave me amoxicillin 875 strep test came back neg feeling little better