Why do i still have Chlamydia symptoms 2 days after treatment?

So i treated Chlmaydia but symptoms came back 2 days after treatment such as itchy tip of penis and pain in balls. Keep in mind i took doxycline for 5 days.. then for the last 2 days of treatment i took it but i did go out and drink alcohol. So could have the alcohol intefered with the last 2 days of treatment?