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A 22-year-old female asked:

How long after possible implantation bleeding should a hpt show up positive, it's the first bleeding post partum so i have no cycle to go on. and why would the spotting stop for 12 hours then start back up only to be pink and smell like lochia?

2 doctor answers2 doctors weighed in
Dr. Michael Sparacino
Family Medicine 39 years experience
1 week late: Home pregnancy tests become positive at about the time when you're one week late.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Gurmukh Singh
Pathology 51 years experience
3 weeks post-sex: Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Dec 10, 2019

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