I am in the same situation. I have never gotten a true positive and its really depressing!

I am using up my last two opks then changing to temping. Its terribly frustrating as I have been ttc for almost 6 months now, with no hint of a positive opk! I have a stupid 22 day cycle that sometimes goes 24 days. I have NO idea when I ovulate now and feel pretty defeated that I'm not rejoicing over a +HPT yet! I'm 26 and was on the pill for a good 12 years or so...