CD 27 12 DPO BFN and no AF

Ma

Gooood morning. I thought AF would be there when I woke up this morning and she wasn’t. . I had a brown CM when I wiped 2 days ago and nothing since. Been peeing like crazy, boobs are sore for the first time since my lost pregnancy in January, and I’m sooooo fatigued. Got a BFN this morning as well. I’m so bummed out. I’m expecting AF since I normally have a 28 day cycle.