Ttc (implantation and bfn)

Hey ladies I definitely need some advice so I my cycle has been consistent for the last year I have had a 33 day cycle this month on cycle day 30 I start spotting the spotting ended on cycle day 32. The spotting was a very dark brown but was super light it looked like old blood. I took a first response and it looked like a faint positive. I took a digital and it came back negative. I’m not even sure what to think anymore I’m waiting for a clear positive test I’m almost two weeks late is it still positive I could even be pregnant but I totally missed my period and just had spotting. What should I do?