Doing an opk experiment this cycle using first response, new choice/dollar store, wondfo and clear blue. All have been negative until today. Tested at noon when I got a huge glob of mucus and the first response was negative, but the other three were positive. Retested this afternoon.
First response - closer, but still not positive
Wondfo - definitely positive
Dollar store/new choice - definitely positive
Clear blue - definitely positive
Hubby and I were very active this weekend, and today. Hoping to get one more round in before surgery tomorrow morning.