Hi had yeast infection &took medicine for it.but now my period is late for 3days. does infection delayed my period?

Diabetic, pregnancy: Persistent yeast infections can indicate that you may be diabetic. Also delayed menstrual cycle could also indicate pregnancy. Infection may influence you menstrual cycle. It is best to seek evaluation with your OB/GYN care provider.

Not typically: If pregnancy is a possibility you should do a pregnancy test.

Possibly: It is doubtful the yeast infection delayed your periods because it shouldnt effect your hormone system. But possibly the treatment for your yeast infection has slightly altered the hormones. But truthfully it would be very rare for either to effect it, and I would look at other reasons.

Yeast doesn't: normally delay period. Reasons for missed/late periods: low body weight, obesity, marked weight ^ or v, over-exercise, endurance athletics, breast-feeding, ^ stress, illness, eating disorders (bulimia or anorexia), anovulatory cycle (no egg released), travel, hormone irregularities, drug use, meds (i.e., birth control) or medical problems (i.e. PCOS). #1 reason is pregnancy.