Trying to stay positive!

My husband and I have been actively TTC for a year now. Got a positive opk on 7/21. According to glow, I should have started AF last week, but Ovia says 8/12. I had light pink spotting for 3 days (then nothing), occasional hot flashes, and extreme fatigue. Tested this morning and got a BFN but I'm not giving up hope! Something just feels up... Anyone else have similar symptoms and got a BFP? I've got my fingers crossed!