How sensitive is the pregnancy test?
When Did You Ovulate? The first piece of information that you will need to know is when ovulation occurred. You should have a good idea if you are using a BBT or even if you used an Ovulation Test. (If using BBT you probably Ovulated right before the temperature spike. If you used an OPK you probably Ovulated about 24 hours after a positive test.) After Ovulation, if the sperm were available and conception took place, then it takes about 4 – 12 days for the fertilized egg to make the journey down the fallopian tube and find a prime place to burrow into the rich lining of the uterus. What will soon become the placenta starts to produce HCG and is sent out into the body to let it know that there is no need to mensturate. Once the HCG is sent out into the bloodstream it takes a small amount of time for the kidneys to begin filtering it and that is when the urine starts containing HCG. HCG levels generally double every 24 to 36 hours. Within 2 to 3 days after HCG has first been released, m
