- Joined
- Aug 26, 2014
- Messages
- 6,109
- Reaction score
- 2
I've been using the same brand of opks (Wondfo) for the past four out of my five pregnancies. After being unable to become pregnant for three cycles now despite having had positives on the Wondfos at CD 13/14 the past couple cycles. I have decided that if I don't get pregnant by Christmas, I may try using a different brand. I bought a couple $ store tests as an experiment just to see if they were different from my Wondfos and they were. The line was much, much darker. Does each brand of test have a different level of sensitivity? Is it possible that I may be missing my surge using the Wondfos?