have taken a test on Oct 5 2012 that came back positive for pregnancy. My last menstrual cycle was Sept 6 2012.. according to conception calculators i would have conceived by the 20th of Sept.. I would like to know how accurate this is or would an ultrasound be able to tell.. My worries are because i had an affair on Sept 25 2012.. i am almost certain i may have been already pregnant but would just like to know the chances of my affair fathering my child
An ultrasound will only give you an estimate of when conception occured based on the size of the embryo. However, it would be too soon to get a positive test after having sex 9/25. It usually takes at least two weeks for a pregnancy test to be positive after sex.
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