Helpp!!!!!!

Mel
App says id be 4 weeks 2 days pregnant(if i got lucky) my boobs kill expecially my nipples and im tired allll the time!!!!! Yesterday i had brown spotting that turned brownish red. Today it had completely stopped except when i pee when i wipe its pink. HAS ANYONE GOTTEN A NEGITIVE TEST AND A WEEK LATER POSITIVE? Or does it seem like im not pregnant at all?