Hello doc, i had sex on october during my period, precisely on the second day of my period. but this month's period was expected to start on 3rd nov. but till today, 10th nov., it's late. pls what could be the likely cause?

Can give Dr. a call: 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.