How likely is this?

Question

If I were to have unprotected intercourse, how probable would it be to have a positive pregnancy test 13 days later?
Likewise If I were to have protected intercourse how probable would it be to have a positive result 10 days later?
Trying to work out a due date

I tested in the evening

Answer 1

It's very probable - 13 days and 10 days, especially if you are using an early response test. The woman usually ovulates (is most likely to become pregnant) 12 days into her cycle. Each cycle usually last 28 days, so 10 days is plenty of time to get a positive reading if you did it in the middle of the cycle. Best of luck!

Answer 2

I would say the unprotected sex 13 days before, the hormone that it tests for needs a bit of time to be found in the urine, and if you tested in the evening then your urine is not as strong, even still your due date wont be 200 percent accurate, depends on ovulation, and when its ready to come! congrats

Answer 3

You should definitely test positive by the first day of your first missed period, sometimes sooner.

Due dates are typically counted forward from the first day of your last period.

If you had protected intercourse, you aren't likely to be pregnant unless it failed in some way.