Too early to ovulate?

Mtmm
Hi! My cycles are very regular at 28 days with AF generally lasting 4-5 days. 
I'm on CD10 and I had very distinct cramping this morning for about 5-10 minutes and had EWCM yesterday.
 Jumped on my partner just to make sure haha! 
Has anybody else ovulated this early? I am new to tracking so I don't have any other ovulation days to compare it too 
Cheers!