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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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Can Intake Of Regestrone 5mg Cause Delay In Periods?

hi doctor my name is sony,i have taken regestrone 5mg from my 22nd day of cycle to 26th day for 5 days twice a day we had an intercorse in between,its 9th day after taking last pill,still my periods didnot came,took pregnancy test on 9th day came negative,what does it mean?why my periods are not coming
Fri, 4 Apr 2014
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OBGYN,  's  Response
Hello and welcome to HCM,     
I am Dr Nilajkumar a consultant gynecologist and I will be helping you in your queries.

Regesterone is a progesterone analogue and it may delay periods. However you have not mentioned anything about contraceptive use and regesterone from day 22 is not a contraceptive. So if there was a pregnancy due to sexual acts then periods will be delayed. A pregnancy test will come positive 3 weeks after the sexual act that caused the pregnancy if a urine test is used and a week earlier for a blood test.

Please wait for 2 more weeks before you do the test. Sometimes stress also delays periods. So relax and maybe you may have a period.

If the test remains negative and periods are delayed more than 2-3 months, you must see your gynecologist for other causes of delayed periods.

Hope this was helpful.
Feel free to ask any further queries and I will be happy to help.
Thanks for using HCM.
Have a good day.
Dr Nilajkumar Bagde          
Consultant Obstetrics and Gynecology
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Can Intake Of Regestrone 5mg Cause Delay In Periods?

Hello and welcome to HCM, I am Dr Nilajkumar a consultant gynecologist and I will be helping you in your queries. Regesterone is a progesterone analogue and it may delay periods. However you have not mentioned anything about contraceptive use and regesterone from day 22 is not a contraceptive. So if there was a pregnancy due to sexual acts then periods will be delayed. A pregnancy test will come positive 3 weeks after the sexual act that caused the pregnancy if a urine test is used and a week earlier for a blood test. Please wait for 2 more weeks before you do the test. Sometimes stress also delays periods. So relax and maybe you may have a period. If the test remains negative and periods are delayed more than 2-3 months, you must see your gynecologist for other causes of delayed periods. Hope this was helpful. Feel free to ask any further queries and I will be happy to help. Thanks for using HCM. Have a good day. Dr Nilajkumar Bagde Consultant Obstetrics and Gynecology