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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Delayed Periods. Using Contraceptive Pills. Pregnancy Test- Negative. What Is The Reason?

hi, i am on a pill but have been having sex with my boyfriend. We had sex a month ago for the first time in ages and we have had it every other day since, my period is 17days late and i have been feeling really dizzy, light headed, hungry, sick but no vomit and tired ( i also work alot). I have taken a test but it is negative but still no sign off a period? Can i have some advise please!
Fri, 19 Apr 2013
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General & Family Physician 's  Response
Hi and thanks for the query,
the commonest cause of prolonged or missed periods in a female of reproductive age is a pregnancy. At times, depending on the test you use, there could be false negatives. It is at times encouraged to be very sure to carry out a blood test, which entails blood measurment of beta HCG, a pregnancy hormone.
However, the fact that you are on pills, especially if you take them correctly would also minimize the chances of this being a pregnancy. Pills are hormones and it is not unusual to have some cycle derangement when one is on a contraceptive pill. However, if this is the first time you are experiencing this, it is reasonable to do a good blood pregnancy test and / or obstetric ultrasound to visualize the womb depending on the case.
Your primary care physician could be of great help.
Thanks and hope this helps as I wish you the best of health.
Best regards,
Luchuo, MD.
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Delayed Periods. Using Contraceptive Pills. Pregnancy Test- Negative. What Is The Reason?

Hi and thanks for the query, the commonest cause of prolonged or missed periods in a female of reproductive age is a pregnancy. At times, depending on the test you use, there could be false negatives. It is at times encouraged to be very sure to carry out a blood test, which entails blood measurment of beta HCG, a pregnancy hormone. However, the fact that you are on pills, especially if you take them correctly would also minimize the chances of this being a pregnancy. Pills are hormones and it is not unusual to have some cycle derangement when one is on a contraceptive pill. However, if this is the first time you are experiencing this, it is reasonable to do a good blood pregnancy test and / or obstetric ultrasound to visualize the womb depending on the case. Your primary care physician could be of great help. Thanks and hope this helps as I wish you the best of health. Best regards, Luchuo, MD.