Ovulated early

I have been tracking my ovulation using opk’s and surprisingly got my peak 3-4 days earlier than I expected. (I have been like clockwork before this)

Is this normal?

I normally get my peak days on Cd14-15 is Cycle day 11-12 too early?

I’m just curious as to why it has changed this month.

And AF usually arrives bang on 15 days after my peak day. So will it mean this month I have a really short cycle? Of 24 days or will AF arrive on its 28 days cycle day?

Help! I’m confused!