Oh heck Uhu - we need to get together!! I am having exactly the same problem. I got a fortel OPK and used it today and got only the control line. There was no 2nd line whatsoever. I'm like you and should be o'ing around now and I have no idea!! My cm is usually a really good indicator and even that's been ****ing me around (sorry - getting really p&**ed off ). I'm starting to think that I might not have o'ed last month and that the same has happened this month. My question in regards to OPK's is this - Once you are o'ing, does the OPK pick this up or is it only sensitive to the LH surge prior to O. So would it be coming up as negative if I am currently o'ing? Does it only pick up the LH surge and not the actual O? Does that make sense?

Good luck Uhu - we both need it!