I had oral sex three weeks ago and following week i had a yeast infection, my period was supposed to be here two days ago but i still havent had it and i have been having different types of vaginal discharge and cramps recently, should i be worried?

Can give Dr. a call: In a woman with regular periods, some causes of a late period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (like birth control pills), hormonal imbalances, etc… Seeing a doctor is a good idea if symptoms are persistent, recurring, or worrisome. Pregnancy is the common cause of a missed period, if sexually active.