What will happen if i take diflucan (fluconazole) and i do not have a yeast infection?

Nothing usually: Depends on the amount. At prescription level side effects described by manufacture can happen.

Not much: Just a wallet biopsy. Fluconazole has some side-effects which you can find on-line, but for the most part is a fairly benign drug. If you don't have a yeast infection your symptoms are not going away either.

Usually not much: Prescription medications are that for a reason, because of increased risks if taken inappropriately or improperly. Diflucan (fluconazole) is relatively safe, but can interact with other medications, causing problems from these. Diflucan (fluconazole) also has a rare association with liver failure, and should only be taken if an indication exists and the rest of your medication and medical history has been evaluated.