Tmi 1st timer on here march 30 I got the shot or the 1st on June 30 got off of it

So I never had a period on the shot so I was waiting and on the July 11 there was a lil pink Dot but then I wiped it wAs gone on the 12 of July it was lil bit more pink  but there was nothing on my undies and on july 13 it was gone no more  blood so could it had been my period or pergo