Please help!

Good morning!!
So I've been feeling pregnant the last few days, (food aversions, a lil nausea, and last night some really strange pinprick/pulling sensations in my lower left side abdomen.)
Usually I spot three or so days before AF, but haven't lately and AF is due to arrive in two days. 
I've take three tests in the last few days and they're all BFN
Has anyone had a BFN two days before their missed period, but still ended up pregnant?