Yeast infection

Is it normal for you to get a yeast infection each time your cycle comes my cycle usually comes twice a month beginning and end of each month and ive been getting them non stop is it normal or should I see a gyn ? I did switch up diet to help me gain a little weight because I was told I was underweight to be 18 from my primary care doctor. And I’m not educated on yeast infections I recently started getting them.