You took doxypep, which you probably didn't need, and you definitely didn't need the additional doxy. Stop taking antibiotics.
Pain with urination can be caused by many things - dehydration is the most common, since you had protected everything. Since you don't have a discharge or any skin symptoms, I'd guess it's not candida.
How's your water intake? Alcohol and caffeine intake? How bad is the pain?
Try increasing your water and decreasing your alcohol and caffeine for a few days. If you don't see a marked improvement by Monday, make an appointment with your doctor.