New to Glow and nervous.

I decided to try out this app instead of what I have been using for a while and I was surprised to see that it calculated my ovulation differently and if it39s right I may be in luck. I am nervous however, because in April I had my first positive test in the 2.5 years we39ve been trying and 2 days later had a chem pregnancy. I feel like a big turd that it upset me as much as it did but I39m really scared to take another test this month if I39m late but at the same time I want to know ASAP. Any words of encouragement or advice?