Could this HPT be a BFP?

Jill • Happily married, had my first son 12/31/16 (conceived via IVF), ready to expand my family!
I am CD 32 and ovulated CD21 so I am 12 dpo. I took a test on Friday and got a BFN (10 dpo). I was pretty bummed but then took a test yesterday and didn't look at it for long because I was out of town just assumed it was negative. Today I got home and looked at it again and saw a faint line so I decided to take another one and this one too has a faint line. I am nervous to think its a really positive in case I am getting my hopes up! What do you think? I go in for my beta on Tuesday. 

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