Hello This Isan Extremely Embarassing Situation But My Fiancee And

Hello this isan extremely embarassing situation but my fiancee and i for his birthday had a threesome we were drunk and didnt make the best decision because we didnt use protection with her but she was my best friend so i figured sje was clean, well come to find out a couple days ago she calles and tells us she has chlamydia. I have 20 penicillin vk from when i had an ear infection a few months back i was wondering if me and my fiancee took them would they treat it rather then going through the embarrassment of calling our pcp and explaining the whole situation again and hoping they just call something in? Please answer me as soon as you can im so disgusted and embarrassed please let me know!!!!! Thank you!!!!!!!!!