A little sad

So we have been trying foe number 2 sonce jan.

Baby number 1 happened first time.

According to my last period tracker app im 2 days late for my period not done a hpt.

But this app saying 2 days before im due a little confused.

Also tho we only dtd 3 days b4 ovulation last month thay was it.

Could I be?

Second just found out hubby is away next week all week so that would be my fertility window.

A little confused as well this app saying u dont start ur window till over a week later my last app was saying 2 days of nothing then low low med high ect.

Just trying to learn this app as well