Cd 49 still bfn any hope?

Last month I had a 43 day cycle. I tested opk clear blue easy cd 14-33 and all empty circles this cycle, ran out so I stopped testing, I had ewcm up to cd 39 then dried up. I do not chart temps but very clear bfn today on an .88 Walmart test. Is it possible I can still be in? I know there is no real way to confirm ovulation unless temping but find it hard to believe I could ovulate that late!