Hi bella. This may not be the news you're hoping for but I started using OPKs when first trying to conceive last mth. After 12 days straight of getting only faint lines (i.e. negative every time) I gave up hope and stopped using them....then Fertility Friend showed I had ovulated on CD28 which I only discovered about 3 days after the event. I hadn't used an OPK close enough to this time to see if it gave me more than a faint line but the 12 days straight of faint lines pretty much told me that I was getting only negatives. Perhaps you're different to me and will have a similar experience to AJC if normally you get no line at all and have found a faint line today. I will keep my fingers crossed for you!!!

Are you charting temps? Maybe that'll help you to determine when you're ovulating!?