Too many tests!

Has anyone ever tested at 12 dpo or 5 days before AF is due and gotten a bfn and then missed pd and got a BFP?? All of these girls are getting faint lines so early before AF and mine are so clearly negative. Losing hope. I know I'm not out yet, but it just seems like I'm just waiting for AF to show up at this point... I really don't have many symptoms at all. I had cramping 7-10 dpo and the last couple days have had increased white cm but that's it. No sore boobs, no back ache... Any hope??