HomeAnswersObstetrics and Gynecologydelayed periodAfter an unprotected sex, I took emergency contraceptives. I got the periods for the immediate month, but they have been delayed for consecutive months. Why?

Can emergency contraceptive pills delay periods?


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Published At September 30, 2023
Reviewed AtSeptember 30, 2023

Patient's Query

Hello doctor,

I have had unprotected sex recently and took an emergency contraceptive pill after that and had my period a few days later. But after that, I missed my period the following months. I have not had my period yet. I took a home pregnancy test twice, both are negative. Could I be pregnant? I do not have any signs of pregnancy like peeing, nausea, or sensitivity to smell. Kindly suggest.

Thank you.

Answered by Dr. Balakrishnan R


Welcome to icliniq.com.

I have read your query and understand your concern. You are definitely not pregnant. You have got two urine pregnancy tests, have had periods after taking the emergency pills and hopefully not had sex after that. So there is no chance of pregnancy. Let me explain why you have no periods. These pills usually are very effective, but they disturb the normal hormonal balance and periods regularity. Your main problem is weight. Maybe you had regular periods till now, but when pills like these are taken, it will tip the balance of hormones. Also, any sudden increase in weight can be the cause. From your history, I presume you have PCOD (polycystic ovarian disorder). This is a congenital condition, I mean it is a genetically programmed condition, you get it from your parents. When you suddenly put on weight, this cholesterol is converted into estrogen hormone ( if I may simulate- have not you seen obese men developing breasts and in young obese girls, who develop periods at a younger age - they all have high levels of estrogen hormone or female hormone). In your body too when fat, which is a store for tomorrow, is more than normal, this is converted to hormone which tips the balance between FSH (follicle-stimulating hormone) from the brain and the ovarian hormone. FSH as the name suggests stimulates follicles from the ovary, but once the follicle is big enough to ovulate, the FSH is suppressed by the same estrogen hormone from the ovary. But when the same estrogen hormone is coming from fat, the brain is confused and follicle growth stops early at a smaller follicle size and will not rupture, next scan you will see all these follicles as polycystic ovaries. This is usually associated with obesity, irregular cycles, no periods for a few months, and later heavy periods with clots and fleshy masses, spotting on and off, thyroid abnormality, and prolactin problem indirectly. You develop that extra pad of fat around the mid-segment of the body, especially the waist, thighs, and breasts, with no fat beyond the elbow and knees. Excessive body hair growth, hair fall, a dark shade over the lower half of the face, acne, oily face skin, black skin over the back of the neck, inner thighs, and under the surface of the breast. May also have a family history of diabetes, especially their father or his family. This will not allow ovulation to occur at any time and so you cannot get pregnant, till treated. It also increases your chances of early pregnancy abortions. But this has a solution. Your weight has to be: Weight(in Kgs)= Height (in cms)-100

Your expected weight is 163 to 170 pounds. Once you reduce weight to the normal range, you would not need any medicine to get periods or to get pregnant and pregnancy will be healthy.

To reduce weight follow the following:

1. Avoid fasting, junk or fast food, and red meat, and reduce snacks in between meals.

2. Have low-calorie food with high proteins.

3. Regular exercise (especially for the waist and hip area), aerobics, yoga, brisk walking (swing your hands well), and trying to reduce four to eight pounds a month. Do not hurry on weight reduction, it will be difficult to maintain. As soon as you reduce at least 10 pounds, you will see changes.

Now to have periods- have any of the oral birth control pills or contraceptive pills like tablets Novelon (Desogestrel and Ethinyl Estradiol) or Ovral-G (Norgestrel and Ethinyl Estradiol) or Dear 21 or Duoluton-L or Intimacy plus 3 (all these are mainly used in clinical practice for hormonal regularization, for periods correction or delaying periods, not for contraception). Have one tablet twice a day for 10 days (throw away the 21st pill), no matter what the cause is (except pregnancy) you will have periods within seven to ten days of the last pill. You can continue the same pill for 21 days once at night, from the first day of bleeding. This will regularize your hormones and cycle, and also give you time to reduce a few pounds. No lady likes to be told she is overweight, but I feel this is the cause of a young lady like you. Hope I have clarified your query.

Thank you.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Balakrishnan R
Dr. Balakrishnan R

Obstetrics and Gynecology

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