I'm ovulating

So I've been with my boyfriend since 2010 we didn't start trying to conceive until after my surgery in 2012. We have not yet conceived I'm 27 and my family and friends are starting to think I can't conceive. It was becoming more of a downer and everytime I took an ovulation test it would say I'm not ovulating I finally gave up, until I came across glow and now I just wanted to see how accurate the app was and it said today and tomorrow are my best days to conceive. I took a ovulation test today and it said I'm ovulating I'm soooo excited hoping that this is a successful conception!!! Wish me luck!!! I've had a miscarriage before so I'm scare that if I do conceive I don't miscarry again. ???