Hi all, I just went to take a HPT and took an OPK test strip by accident. I then too a HPT test strip so have taken an pregnancy and ovulation test....and got a (I think) positive OPK? I am temping and charting and clearly ovulated 13 days ago so am surprised that this OPK strip was so dark. OK, it wasn't exactly as dark as the control line but barely off! The HPT was negative but just wanted to know if anyone else has found this with OPKs?