<s>[INST] Hello doctor, I took Carbamazepine 200 mg for the first (and last) time, at the beginning of this year and stopped right after experiencing some side effects from it. A month later, I discovered that this actually interacts with contraceptive implants, which I have been on for one year. Looking back, I have had unprotected sexual intercourse a day after taking Carbamazepine. I did get a period in January. I also took pregnancy tests in February and they all came back negative. I still feel anxious, though. Is there any chance that I am actually pregnant and I have been just having some bleeding? Also, has the effect of my implant been permanently affected due to Carbamazepine or not? [/INST] Hi. Why did you take Carbamezepine? Do you have epilepsy? </s>