Negative PT after Faint Line

Sino po nakaexpirience dito na nagPT then faint yung isang line.. After 3days nagPT ulit negative na? Ibig sabihin po ba false positive yung una? (I have irregular periods po before like 2-3 days nadedelay, pinapills ako ng OB ko for 3months and since then, regular na, not until now kasi 7days delayed na ako wala rin po akong ibang known symptoms aside sa mild pain sa breast, increase appetite and mild cramping) salamat po sa magseshare ng experiences.. #TTC