Am I possibly having implantation?

So I've been googling ALOT but I think I'm just driving myself crazy ! 😔 yesterday I noticed brown spotting , it was on and off all day . Today it's still brown but not heavy at all (I have heavy periods and they are bright red, never brown) . I'm still a few days away from getting my period . What do you ladies think ? Would you ladies like to see a picture ? My symptoms are just mild cramping, fatigue , and I got nauseous this morning after drinking iced tea , and mild breast tenderness. I've taken 2 tests but they were negative and I read that it would be way too early if I'm barely experiencing IB . I'd love to hear your stories on your IB :)