chart crazy

[aussiettc]

Hi guys, can anyone look at my chart and tell me what they thinks going on. I was sick on cd16 and cd17 with a fever andd vomiting? FF has me O'ing at cd18 but i think it was cd15 or16 and it out cause i was sick

any thought?

 

[TripleB]

What happens to the crosshairs if you take out fever for those 2 days? Given the +OPKs I think earlier ov too...x