Help, possible!?

Could someone get a positive opk 4 days before ovulating?? Cervix is SHOW, having EWCM, breasts are killing me, I am bloated, and been cramping all day! 4 days ago I had what might have been a positive opk, it was so close! Starting then I got high fertility on my digital opk too! But since that day my wondfo opks have had no test line! I feel like today is O day, but is that possible without an LH surge, is it possible my surge was 4 days ago?

I also had a temp dip that made me think i was going to O today!