is it implantation bleeding?!

so i started spotting very light on 5/17 and there would be nothing in my pee only when i wiped there would be light pink of blood but not a lot. i wore liners but there was barely anything on it, just a dot or so. this lasted till 5/22 and today (5/23) was my predicted period and i am not spotting anymore. is this implantation bleeding?! should i take a pregnancy test?!