Ok, I finally have proof of my BFN!
I emailed the test company who got back to me immediately with:
"A first for us too - never heard of a pink dot before. I can only assume that somehow as the reactive dye for the 'control' line was being deposited it also caused a drop to be put in the wrong place. Definitely a negative as the HCG 'test' line is deposited in a long line (strips are cut to size after deposition) so a proper line would appear if you are pregnant."
Hmmmmmmm, I wonder how often this happens! And probably not just with this brand either. I'm reluctant to tell you the brand in case you all stop buying them! I dont wanna be branded a tell tale!