Implantation blending ?!?!????

Hiii I have a question my period was meant to come on the 29 on June (I am very regular) it came on the 1st of July (2 days late) my 1st period day usually is my heavy but this was light pink and at the night i started bleeding more it was a medium flow but not as much as how I usually get it the pad never got complete full yesterday i also had so bleeding but not as much (also my periods usually last from 5-6 days usually having lots of bleeding untill day 5) of well today I completely stop bleeding on day 3 just have a bit of brown spotting this is complete out of the norm for me my question is could this be implantation bleeding ???? Should I take a test ?? Help!!