False negatives anyone??

Meg • 💙

hey all! TTC for 4 months. AF is 8 days late. I'm 19 dpo on cd33 of my normal 25 day cycles. know when I ovulated. had sex in my fertile window. nothing but BFN's. blood test negative also. my doctor says it's nothing to worry about until I miss THREE PERIODS! That seems a little excessive don't u think?? anyone been in similar situation and ended up pregnant? super sensitive nipples, fatigue, no appetite.