Were you on the prescription strength because a doctor did a biopsy and determined yeast overgrowth? If so then in the mean time yeah it would be a good idea to go back on it. If you have a doctors appointment coming up then it would also be a good idea to mention this to him. Recurrent yeast can simply mean you had a hardy strain of yeast that is difficult to completely get in check with medicine, or it could mean something more serious like a warning sign of metabolic syndrome, thyroid and hormone problems, or a compromised immune system.