Today I used my very first OPK, I know it is to early for O but I wanted to see what they were like.

I know that the test line needs to be as dark as or darker than the control line but what does a light test line mean? Is it ever completely negative as in only the control line showing?

Well I think that is all for now and any advice/experience would be vary helpfull to me.

P.S. If this question has been asked before please just attach the link