Opk testing for first time have some ?s

Hi girls! I am ttc. I concieved last month and got a super early hpt and started my period four days early so I was told I had a chemical pregnancy. We concieved purely by one encounter around the correct time. This is the first month we are actively trying. I have been using another app that tracked my cycles for awhile then came across Glow. We followed glows guidelines as to my fertile time however the other app I still have is saying my ovulation day is a couple days farther off than glow. I have been using opks and got my first def pos yesterday 7/7 morning and I have tested at 11 am, 2 pm, and 4 pm today still all positive. My questions are: how long will the opks stay positive? We bded last night as well as this afternoon should we continue for the next couple days to be safe? I am actually pretty sure I ovulated last night I usually can feel it on one side each month. Also my last ? Is I have read some stuff saying that opks can stay positive indicating you have concieved anyone know if this is true? I have 7 test strips left and I know they say stop testing after a positive however mine only stay stable from 30 days of opening them so saving them for next month is pretty much useless. So should I continue testing and if so any ideas as to when? Thanks for taking the time to read this post. Any answers would be appreciated a lot!