confused

Keila
I took a pregnancy test on 10dpo and there was a very but it was there now I'm 12 dpo it's 3/5 and af wasn't due until 3/7 . I have very very LIGHT pinkish clear spotting yesterday thought it was implantion bleeding but then today it got heavier like a medium flow period and it's bright red . I'm experiencing cramps but it's more discomfort than pain idk what to think any more