Can i be pregnant if..


Glow tells me im in my fertile window. Not a high chance but i think it was my second day of the green. My highest is the 1st of sept. I am doing the approach of one attempt. I did the deed today in the afternoon. I felt good about it. Afterwards i felt different. Probaly in my head lol. I have two boys and trying for another one. Hoping for a little pink ! Anyways i bought an ovulation test. Clear blue advance and peed after dinner and it was just a closed circle. Could i still end up getting pregnant. My period is pretty consistent as well. I got myast period on august 17. Did the deed 29 (today) Thank you all in advance !!