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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Unprotected Sex, Severe Back Pain, Delayed Periods. Plan B Taken Post Sex. Pregnancy Symptoms?

I took plan b a little more than 24 hours after sex and waited until my next period was supposed to come and it didn t so i got a pregnancy test , it said negative . but i still haven t gotten my period it s almost two weeks late and i have severe back pain which i know is a sign of pregnancy. I rarely get back pain but it s possible it could be from dance class. why haven t i gotten my period yet?
Mon, 9 Jul 2012
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General & Family Physician,  's  Response
Hi
Welcome to HCM

After taking the emergency contraceptive pills, usually one will get there periods on the expected date.

among the side effects mentioned, irregular period is also one of them. You might not be pregnant, your period might be delayed.

As you have mentioned mentioned you have performed the urine pregnancy test and had turned negative.

Few points you should be aware are. 1. it should be done week after the missed period, done earlier it might be false negative. 2. it is advised to use early morning urine sample.

If you have done it early repeat the test. UPT kit are nearly 98% accurate. If it is done properly and comes negative chances of pregnancy is very slim.

Back ache is not the sign of pregnancy. If the test comes positive you need to go for ultrasound abdomen to rule out any fetal abnormality as you have taken pills.

Hope i have provided the information you needed.

Take care.

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Unprotected Sex, Severe Back Pain, Delayed Periods. Plan B Taken Post Sex. Pregnancy Symptoms?

Hi Welcome to HCM After taking the emergency contraceptive pills, usually one will get there periods on the expected date. among the side effects mentioned, irregular period is also one of them. You might not be pregnant, your period might be delayed. As you have mentioned mentioned you have performed the urine pregnancy test and had turned negative. Few points you should be aware are. 1. it should be done week after the missed period, done earlier it might be false negative. 2. it is advised to use early morning urine sample. If you have done it early repeat the test. UPT kit are nearly 98% accurate. If it is done properly and comes negative chances of pregnancy is very slim. Back ache is not the sign of pregnancy. If the test comes positive you need to go for ultrasound abdomen to rule out any fetal abnormality as you have taken pills. Hope i have provided the information you needed. Take care.