I got my Nexplanon birth control inserted on 7/25 and waited 11 days before having unprotected sex. On august 9th (Tuesday) i got my wisdom teeth out and was prescribed penicillin VK and had sex again the following Friday. The doctor told me the antibiotic would effect my birth control so when i had sex i made sure he pulled out but when i googled it it said that the antibiotic i was on didn't affect my implant. Now I'm experiencing really sick feelings like i want to throw up and i can't sleep because the feeling is so bad. could i be pregnant? or is it just a side effect from the medicine ? if it is should i stop taking the penicillin ?