BFP brand?

Is Bfp brand notorious for false positives? The only think I've found on Google is from years ago. I've got good faint lines from two days ago (9dpo), one from yesterday and today but today's is lighter. I took a FRER today, not fmu but with 4 hour hold. Nothing. 
 I don't know if another chemical pregnancy is happening. I have no cramps. No bleeding. Nothing. Just really sore, veiny breasts. I'm 11dpo.