AF is MIA! Late from 10/15...

I'm now 16 dpo. I'm also 14dpo like clock work AF comes, but it didn't. Usually I am extremely bloated if AF is coming even by a day late...now it's day three, somethings weird! I had 12dpo pink mucus which I believe to be implantation. I'm trying for baby #2. I did get implantation bleeding similar to this with baby #1. Thoughts or are you in the same boat?