How to change my cycle length

Tyanna
So, I set up Glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">Nurture</a> after getting a positive hmpg test this morning. Well, I was in a hurry and put 28 days as my last cycle, when in fact, I just checked my Glow Ov/<a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> and it said 25 days was my last cycle. So now all my updates are wrong. Is there a way to fix it???