Which app?

I'm using Glow, Ovia and <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Period Tracker</a>. I've finally gotten back to my 28 day cycles but glow is behind cuz of this and still has me at 30 days. <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Period tracker</a> is spot on for 28 days and predicts ovulation day for tomorrow, glow predicts Wednesday. Today sex drive is in full force and CM is watery/eggwhite. Safe to assume ovulation still set for tomorrow?? I had some twinges on rt side yesterday as well. I don't use opks so trying to go by cm. Thanks!