I constantly get yeast infections. my skin keeps breaking out in a rash and i have ibs. my grandma suffered from candida. do i need to get tests done?

Recurrent yeast: Presumably you mean genital or anal area yeast (Candida) infections (thrush), right? First, make sure the diagnosis is confirmed; othere conditions can mimic yeast. If confirmed, get tested for diabetes, a common trigger for yeast infections. Also speak with doctor about preventive treatment. Taking fluconazole by mouth once a week usually is effective in preventing recurrent yeast infections.