Had sex 1 & 2 of the month missed period 7-11 two weeks later stringy reddish/brown mucus discharge showed up on toilet paper for one wipe?

Missed period? Pregnancy is the most common cause of a missed period. If not pregnant, other causes of a late or missed period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (especially birth control pills), hormonal disorders, etc… A visit to one’s Ob-Gyn doctor is a good idea if symptoms are persistent, recurring, or worrisome.