First response digital


First time using OPK and I'm regretting getting the first response digital. According to glow, i should ovulate tomorrow, but today it's still reading no. I wish I had regular test strips because then I'd at least see the color getting darker right? My cycles are only 25-27 days so I thought I'd ovulate early, and now I'm worried that I won't at all. Does a short cycle necessarily mean you ovulate sooner than day 14? What do you think?