8dpo - negative HPT but positive OPK??

[Laura27]

Anyone else had this?? So weird...

 

[Cppeace]

opks will generally not go positive from hcg until after a hpt will. Not everyone will get a positive opk when pregnant. Only about 40-50% do early on (like 6 weeks or before).
opks can go positive for other reasons, including an lh surge just before AF arrives.