false positives?

Question

I just had my son 9 weeks ago. Took a test about a week ago & it came back positive. Went to the doctor, they did a regular pregnancy test & it also can back positive. But my blood work came back negative.. Has this happened to anyone before? Do you know what could cause this? 
Update: No I haven't had a period yet.
I also haven't gotten a chance to talk with my doctor. They called me over the phone & told me my results from the blood work.

Answer

Hmmm, I can't speak from experience but I'm going to assume the blood test would be the most accurate test. What did your doctor say?

Answer

That's strange. You'll just have to wait until the md explains it to you

Answer

Have you had a menstrual period since the pp bleeding stopped?

Answer

Chemical??

false positives?

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