Glow change your cycle?

After my period returned my Mc in January glow set me at a 27 day cycle and was right. This time it set me at a 27 day cycle with fertile day being Sunday. Today is CD 11 and I’ve had two days of low opk (last month went low right to peak, no flashing smiley). I noticed after I entered today’s opk it pushed everything back a day to 28 days and fertile day being Monday. Is this normal?

I’m worried about not seeing flashing again. Maybe my MC or the HSG i had in January messed everything up! Help 😔