Have been using OPK's for 4 days now. Started off with faint line but it's got less each time and this morning there was practically no line at all! BBT's has been all over the place, so can't pinpoint if I've O'd or not. I'm on CD14. Is there a chance I O'd while still taking the Clomid during days 5-9? I usually have a 32-35 day cycle, so feeling a bit confused.... CM is still creamy, but have had increase in libido this evening (sorry TMI). UPDATE: Have taken another OPK 20 mins ago and got VERY faint line again. What is going on???