Hey - Hope its a BFP for you! It seems that there are not hard and fast rules when it comes to BFP Symptoms, everyone is different in some way.
For me it was:

Sore boobs earlier than usual before AF
A butterfly 'nice' feeling in my tummy
A hot face (as in burning cheeks)

I got a BFP on DPO 9 - albeit feint but a line.

Good Luck!