How long of a window do ovulation tests show positive for? I just started to use them 3 days ago. (None positive thus far).

My "fertile window" is sometime between tomorrow and sunday. (IF im normal lol)

I was curious as to how many days the tests show positive for?

Is it best ro just have sex every/every other day when ttc during the approximate window?

Also is it better to test 1x or 2x a day?

(This is my 3rd child ill be trying for, but due to medical reasons its not as easy this time around so we are tracking as best as possible to increase our chances)

Any input is greatly appreciated!