Vaginal candidiasis symptoms and conditions

6 weeks ago, I began taking Doryx 100 once a day for mild acne. 10 days into treatment, I started with what I thought was a yeast infection, feeling as if I was "on fire" in the vaginal area. I used a Monistat 3 and I felt no relief. I went in to a Take Care Clinic at Walgreens and the RN had me do a urine culture. It came back positive, I had a bladder infection. I was prescribed an antibiotic, Cipro 500, dosage of twice daily for 3 days. My symptoms persisted, some days worse than others. A few days later, I went in to my gyne office. The Dr. did a swab test and found no yeast. They took a urine culture and it was negative. She saw some redness and inflammation, but could not explain what it may be from. Perhaps a new soap, she questioned? She prescribed a cream (Lotrisone) to help with the inflammation, but the cream seemed to make the area burn even more. 2 weeks later, my symptoms dulled. However, I felt that there was still something wrong. I received an Rx for Diflucan, as if the symptoms might just be from a yeast infection this time? It's possible, I thought? Again, no relief in site and it's gotten worse. A week later, I go back into the gyne office and another Dr. tells me to try switching soaps again? What's wrong with this picture? I have NEVER had any type of issue in the past and now I am 6 weeks into this one? Doryx is the only thing new that my body has come in contact with. One of the side effects in the pamphlet was "vaginal irritation/discharge." According to the pharmacist, this may occur with prolong use (such as 6 months) of any antibiotic. Although Doryx has cleared up my acne, I have decided to discontinue its use. I am hoping that this cures my symptoms. Were these the side effects from the use of Doryx? I shall see.