Implantation bleeding or Period?

Michelle

Hi, I need help! I've been feeling anxious lately, thinking about whether this is just light period or implantation bleeding and it's already my 5th day :( First picture is of my 2nd day experiencing this (February 2), 2nd picture is my 3rd-4th day (February 3-4), and the last picture is today (the last picture looks pinkish but it's actually brown)!

My expected period is February 3, but I already experienced brown blood on the night of February 1st, expecting that it was just the start of my period.. But since I kept overthinking I tried a pregnancy test on February 4 but it came out negative, and so far I haven't been experiencing any symptoms, everything seems normal as usual. Please, I need answers!