Are these BFL's?

I have tested the last four mornings....all very fain lines within 3 minutes. Not too much darker each day though. What are your thoughts? My husband doesn't want us to get our hopes up...but the waiting is driving me crazy. The picture of the test this morning (7/29) was taken 2 minutes after I tested. These can't be evap lines can they? Why wouldn't they get much dark? Maybe it's still super early for a BFP? (And I tried a digital yesterday in the afternoon and it was negative).