I normally get small pimples on my inner thighs that come and go. But a month ago, I had an infected pimple on my left inner thigh. It was a big size and hard. I could feel the pain from it. The doctor put me on anti-biotic doxycycline. It went away. But recently, I have small lingering pain in the same area but not as much as there was with the pimple before. Theres no pimple there but still a dark mark remaining from the pimple now. Could it be that the anti biotic given before wasnt the right one?