18dpo bfn again! Advice?

[bumblebee33]

Hi everyone! I'm new here and need some advice. I'm 18dpo and no af. Cycles are regular and around 35 days. Got my positive opk on cd 19. Anyway I spotted on cd 10 & 11. Thought af was coming early! But nothing.. Then I spotted again on cd 16. Just a tiny amount and I thought for sure af was coming! So here I am cd 18 and no spotting, no af, and bfns . What could be going on? Thanks! !

 

[bumblebee33]

Omg..I mean spotted 10dpo and 11 dpo then again at 16 dpo. Oops!

 

[orionfox]

What i just learned on one of the other threads on here is that if ovulation occured late so will AF. How long have you been using opks?