Can Sulfameth Trimethoprim Cause False Results On A Pregnancy Test? (Top voted first)

Hello, I have been given this antibiotic (sulfameth/trimethoprim 800/160) for a uti and yeast infection. I also had blood in my urine. I have been having horrible headaches all day and night long, feeling like im going to vomit, and been very tired! But my main question is... Could this medication cause a false positive on a pregnancy test? Or could it be the blood in my urine? I am almost sure I am not pregnant. Please help, the constant worrying and and stress is haunting and unbearable. Thank you please comment correct info.

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No, this antibiotic, which is a generic for Bactrim, has not been known to cause false positives on pregnancy tests.

What type of test was it, a home one, or was it a regular lab test that your doctor did?

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Re: cassy (# 2)

How long have you been taking this medication for? If it's been a couple of days and you're still dealing with acute symptoms I recommend you go back to your doctor asap. They may need to analyze your urine to see what kind of infection you have. You should also have them rule out an ectopic pregnancy (see symptoms and early warning signs).

I hope you're doing okay! Please write back and let everyone know how it goes.

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Hello, I have been given this antibiotic (sulfameth/trimethoprim 800/160) to treat a uti and yeast infection. I also had blood in my urine. I have been having horrible headaches all day and night long, really sharp lower and upper abdominal pain, sharp stabbing like pain in my stomach, Feeling like I'm going to vomit, and constipation! But my main question is. Could this medication cause a false positive on a pregnancy test? Or could it be the blood in my urine? I'm also worried I may be pregnant and have tested with at home tests (negative results) but I feel I’m testing too early. Please help, the constant worrying and and stress is haunting and unbearable. Thank you please comment correct info.

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Re: Roy (# 3)

Thank you for responding back! I was prescribed this medication for the span of 10 days and I’m on day 6 of this treatment so far! as I take this medication I feel even worse and more sick than ever. I had to go to the ER cause of how bad the pain was until I was prescribed this medication. They also took a urine pregnancy test which resulted in negative but it’s only been two weeks since I was last intimate. Is that too soon too check for pregnancy?

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Re: Verwon (# 1)

I took both an at home test and a urine test at the ER which both resulted in negative results. I just feel like it’s too soon to tell it’s only been two weeks since I was intimate. I’m also experiencing a lot of early pregnancy symptoms but it’s hard to tell because the antibiotic symptoms are so similar.

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Re: cassy (# 4)

Here is some information from the NHS (National Health Service in the UK):

"You can carry out most pregnancy tests from the first day of a missed period. If you don't know when your next period is due, do the test at least 21 days after you last had unprotected intercourse."

https://www.nhs.uk/pregnancy/trying-for-a-baby/doing-a-pregnancy-test/

I hope this helps and that your symptoms are getting better!

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