IC DOXYCYCLINE 100 MG any one ever use this before? a friend of mine gave me his bottle because his doc changed his prescription. he said it would help me with acne. i googled it and it said its for infections like UTIs and some STDs and also acne.i took a pill last night and one this afternoon. im breaking out a little bit more and curious if its from the pills. its probably all in my head but would me taking those affect me this soon, and has any one ever taking this before?