You should really take a HPT. Sometimes the opks are more sensitive than others. Hoping you get a BFP HPT.
If you have higher Levels of Lh, the Answer brand may appear pos and really be negative. If you take a peek in my photos, you will see an example. The one in the photo is much darker than control line, but the digi shows it is neg. Answer brand must also be as thick as the contol line. I really like the brand because of their cost and the fact I test often and for a long time. But, most of the time I need to confirm a pos result with them. As pp poster said too, opks will turn pos when an hpt would. Lh and Hcg are almost identical in makeup.
have you taken a preg test.