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Can Bactrim Cause Irregular Menstruation?

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Posted on Thu, 18 Aug 2016
Question: Can Bactrim Ds affect a period? I was on bactrim ds,
starting 6 days before my period should come for a uti. I did not have unprotected sex after starting the antibiotics. I have been on the pill for over 4 years. I did take the first pill about 12 hours late due to the phamracy being closed. now, my period is light and it was about 12 hours late. It started late late Monday night and it's Wednesday afternoon. it's mostly red but has some brown. I'm concerned.
doctor
Answered by Dr. Vjollce Mbiarra (34 minutes later)
Brief Answer:
it's not Bactrim but is infection and stress that cause delay and change flux

Detailed Answer:
Hi dear and thanks for your query.

I understand your concern but there is nothing to worry .

Physical and emotional stress is common factors that can delay your period. Therefore, if you have had UTI, it has caused significant stress to your body, it is possible that your menstrual cycle may be affected and your period delayed, or have less flux or heavier.

On these days, when you have took antibiotics for your infection, it may be the physical stress on your body that is actually disturbing your cycle, especially when it occurs during the first half of your cycle, and not the antibiotics per se.

Other stress factors that could delay your period include lack of sleep during UTI.

Regards
Above answer was peer-reviewed by : Dr. Arnab Banerjee
doctor
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Follow up: Dr. Vjollce Mbiarra (41 minutes later)
ok. I was concerned that the first pill was taken at 10am instead of 10pm. other than that they were all taken within an hour or two of the time. I am not one the ones that are very time specific. I felt fine other than the first day or two of uti. I'm just concerned about pregnancy
doctor
Answered by Dr. Vjollce Mbiarra (15 hours later)
Brief Answer:
There are no chances of pregnancy

Detailed Answer:
Hi dear again!
If you have used pill regularly every day there are no chances to be pregnant.
For more you are menstruating,even if you have a few vaginal bleeding but it is a side effect from the use of antibiotic.
Be calm and use much more fluids.

Best regards
Above answer was peer-reviewed by : Dr. Vaishalee Punj
doctor
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Follow up: Dr. Vjollce Mbiarra (8 hours later)
I took the first pill 12 hours late because the pharmacy was closed after work. other than that all pills were taken within a couple hours. I did not miss any. my bleeding is just lighter. I has gotten a tiny bit more the past 3 days. not to be gross but I comes out on tampon (like half is covered) but no necessarily on pad.
doctor
Answered by Dr. Vjollce Mbiarra (15 hours later)
Brief Answer:
You haven't chances to be pregnant

Detailed Answer:
Hi dear again.

As I wrote on the answer that I have given above there aren't chances to be pregnant even if you have drank the first pill 12 hours later .
While less menstrual flux can be due to body stress and from use of antibiotics.

Best regards
Note: Revert back with your gynae reports to get a clear medical analysis by our expert Gynecologic Oncologist. Click here.

Above answer was peer-reviewed by : Dr. Vaishalee Punj
doctor
Answered by
Dr.
Dr. Vjollce Mbiarra

OBGYN, Maternal and Fetal Medicine

Practicing since :2006

Answered : 1572 Questions

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Can Bactrim Cause Irregular Menstruation?

Brief Answer: it's not Bactrim but is infection and stress that cause delay and change flux Detailed Answer: Hi dear and thanks for your query. I understand your concern but there is nothing to worry . Physical and emotional stress is common factors that can delay your period. Therefore, if you have had UTI, it has caused significant stress to your body, it is possible that your menstrual cycle may be affected and your period delayed, or have less flux or heavier. On these days, when you have took antibiotics for your infection, it may be the physical stress on your body that is actually disturbing your cycle, especially when it occurs during the first half of your cycle, and not the antibiotics per se. Other stress factors that could delay your period include lack of sleep during UTI. Regards