I am 16 years old n i had unprotected sex Saturday may 10 n i started my period last month around april 22 n i today may 14 i saw bright red blood spotting in my panties it has been off n on all day but not flowing just here n there n i wanted to know is this implantation bleeding i usual never have unregular periods but this today came 8 days earlier than last month so can someone please help me thanks