OPKs and pregnancy ?

So I know OPKs are not pregnancy tests and shouldn’t be used that way. However with that being said, has anyone every gotten negative OPKs and still been pregnant? I had a definite positive for five days. And now it’s back faint (negative). And, I’ve heard tons of people say they continued to have positives and found out they where pregnant. So I’m just curious if anyone has found out they where pregnant, but didn’t have continued positive OPKs?