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Is Lighter Periods And Negative Pregnancy Test Results A Side Effect Of Spironolactone?

Posted on Mon, 22 Dec 2014

Question: I am taking 25MG spironolactone for almost a year. I had unprotected sex on Nov 1 (no ejaculation) and took Plan B within 12 hours, and another Plan B 30 hours later (I know this is not how the pill is designed to be used). When my period was due on the 19th of Nov, I had all the usual symptoms and when I started my flow on the 20th of Nov it was lighter and brown with only drops of bright red flow. I've taken 5 pregnancy tests, from 4 different brands, with morning urine all were negative. But I've been reading that diuretics can cause false negative urine pregnancy test results. My OBGYN says it's very unlikely I'm pregnant, but I wanted a second opinion.

Answered by Dr. Richa Agarwal (15 minutes later)

Brief Answer:
You may not get pregnant.

Detailed Answer:
Hi,

Thanks for writing to us about it.

I can understand your concern, though.

Your physician is very true that the chances of pregnancy are very less in your case as you had two I-pill within time after unprotected sex and your pregnancy test is negative.

So, do not worry about it.

Wait and watch for your menses to come.

Hope it is useful, feel free to ask more.

Good luck.
Regards
Dr.Richa

Above answer was peer-reviewed by : Dr. Ashwin Bhandari

Follow up: Dr. Richa Agarwal (13 minutes later)

Do you think that the spironolactone could cause a false negative result? Also, I don't think I made myself clear. I believe the brown flow was my period for the month as it came at my normal period time, and it was more than a few drops.

Answered by Dr. Richa Agarwal (1 hour later)

Brief Answer:
Spironolactone can affect the menstrual cycle.

Detailed Answer:
Hi,

Nice to hear from you once again.
Spironolactone affect sensitivity of pregnancy test is unheard of, but it will affect the menstrual cycle.
Your bleeding is a side effect of I-Pill called withdrawal bleeding.
Inyour case the chances of pregnancy are less so please do not worry about it.

Hope it is useful.

Good luck
Regards
Dr.Richa

Above answer was peer-reviewed by : Dr. Raju A.T

Follow up: Dr. Richa Agarwal (21 hours later)

Hi Dr. XXXXXXX

I am now having a bright red light flow in my panty liner. It is also very apparent when I wipe after using the restroom and will drip faint red drops after using the restroom. I have been experiencing this since yesterday afternoon, but still no heavy flow.

However, this is lighter than my normal menstrual flow. I am also experiencing some lower abdominal discomfort like I do during my normal menstruation.

Could this be the start of my normal menstruation?

Answered by Dr. Richa Agarwal (9 hours later)

Brief Answer:
May be it is start of your menstruation.

Detailed Answer:
Hi,

Sorry for delay I my response.

Maybe it is a start of your menstruation or may be due to side effect of I-pill.

Wait and watch for few days.

Hope it is useful.

Good luck.
Regards
Dr.Richa

Above answer was peer-reviewed by : Dr. Yogesh D