OPK in place of a HPT

[mommysbaby]

I used dollar store New Choice HPTs to ease my POAS. I tried OPKs also a couple of times. When I actually got my BFP it was on Dollar store one & OPK was still showing
-ve. For that matter I had this 1 free Hpt with 20 OPks by Answer and that one also showed -ve. so for me dollr store brands r more sensitive...