BFP?!

Sam

So I've been taking pregnancy tests like crazy lately and not seeing anything in the first 30 seconds to a minute after, so I've been tossing them out thinking if I stare too long I'll be making it up in my head. Well I accidentally threw something away earlier and went digging through the can and found a VERY faint but visible line on my test from yesterday. I pulled out the tests from the days before that and they all have faint lines too! They're all in the same spot and getting darker each time, which makes me think it's a BFP not an evap line. The other two tests are so faint they won't show up well on camera, but this is the one from yesterday. Do you think it's a BFP or no?