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I don't think you can tell when you conceived from a single HCG test as the normal variation is so wide so the test cannot say definitively you are 5 and one half weeks pregnant. It is much more accurate to have an ultrasound scan and measure the size of the baby. Even then you may be out by 2-3 days either way.
First answer by Englishangel. Last edit by Englishangel. Contributor trust: 1459 [recommend contributor]. Question popularity: 20 [recommend question]




