So annoyed!!! 3 bfp then a bfn?!

I took two tests on 14 dpo and got faint positives on some cheaper cvs brand tests. So I bought a clear blue and got another positive but late that evening I got very light pink spotting so I decided to retest today at 16 dpo and the line is so faint I thought it was negative at first. Still lightly spotting. We've been trying for four years so I hate to get my hopes up but I never usually late so that's why I've been "peeing on everything" as my husband called it. Going to try to hold out until tonight to see what the spotting does and get a digital so then I don't have to interpret the stupid lines! Gaaahhhhhh