Patient's question:
I had my period on the 10th of last month. It has been about 45 days since then, but my period hasn't come yet. I took a pregnancy test and it was negative. What could be the reason? How long after pregnancy can it be detected?Doctor's answer:
Generally, a pregnancy test can be detected about 10 to 14 days after fertilization, but some people may take longer, possibly up to 20 days to get a positive result. Some say pregnancy can be detected three days or even one day after conception, but this refers to pregnancy being calculated from the point of conception, not from fertilization.