Ovulation stick confusion / early ovulation

[selina37]

Hello wise girls!

I did a clear blue OPK this afternoon (the pink one, that only detects LH) and got a smiley. I've just done one this evening and I've got a circle again 🙄

I did think it was early for the smiley, as I'm only on CD8! But, I had lots of ewcm a couple of days ago.

Why though, would I get a smiley so soon? And why go back to circle? I've not drank excessively.

Anyone ovulate early on? Why the smiley then circle? Please help! 🤯