Period or implation bleeding

I got off bc in January and had a period had a period feb (18-22) march (13-17) then had 2 in April (9-14) and (20-27) and then had 2 in may (6-11) and (19-25) and Then June 8th I had one day that was heavy enough for a tampon and then the 9-10 almost nothing. Just wondering if this was a period or implication bleeding or what? Any ideas?