not pregnant

So my Husband Are trying for baby #2. It Took us about 6 months to have our daughter she's 3 so we decided to start trying 2 months ago. I started using the glow app a month ago and I truly thought it would help with keeping track of the things needed to conceive another baby. I got false positives in my test and just started my period yesterday.... does anyone think I may be ovulating later? And not what glow is showing me