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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Are The Chances Of Pregnancy If Periods Are Delayed But HPT Is Negative While On Phentermine?

I have taken phentermine only about four times this month not trying to get attached to it and I'm currently a week late on my cycle. I always regular and have never missed a period until I got pregnant with NY daughter six years ago. I took a test today and it came back negative could it be the oven term one interacting with my cycle and\or giving he test a false negative
Tue, 18 Mar 2014
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OBGYN,  's  Response
Hi,
Thanks for the query.
Irregular menstrual cycles is not a common side effect of phenteramine.
Rarely it can lead to irregular cycles.
But associated factors like dietary changes, stress and strain etc can also act.
Actually menstrual cycles with 21 to 35 days duration can be taken as normal only.
If you had unprotected intercourse around the time of ovulation, there is possibility of pregnancy.
Urine pregnancy test kits may not detect early pregnancy sometimes.
So better to wait for one more week.
Possibly you will get periods by that time.
If you do not get periods even after one week, repeat the urine pregnancy test.
If the test gives negative result, consult gynecologist once and take tablets to induce withdrawal bleeding.
Take care.
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What Are The Chances Of Pregnancy If Periods Are Delayed But HPT Is Negative While On Phentermine?

Hi, Thanks for the query. Irregular menstrual cycles is not a common side effect of phenteramine. Rarely it can lead to irregular cycles. But associated factors like dietary changes, stress and strain etc can also act. Actually menstrual cycles with 21 to 35 days duration can be taken as normal only. If you had unprotected intercourse around the time of ovulation, there is possibility of pregnancy. Urine pregnancy test kits may not detect early pregnancy sometimes. So better to wait for one more week. Possibly you will get periods by that time. If you do not get periods even after one week, repeat the urine pregnancy test. If the test gives negative result, consult gynecologist once and take tablets to induce withdrawal bleeding. Take care.