I started using Opk's this cycle 4 days ago.
The first 2 days gave me 2 feint lines. I assumed that they would get darker until I got a positive.
Yesterday the second line completely disappeared.
Today I had some cramping and EWCM but still no sign of a second line.

Do you think I missed my opportunity or I still might get a positve OPK soon?
Any feedback appeciated