i been off my birth control pills since may 15,2014 i had my period on may 18,2014 i was sexually ative may 31,2014 without condoms.....I was active on serval occassions my period came on june 15,2014 i was bleeding for 2 days and then it was brown my period normally last 5 days.my question is was that my period or implantation bleedin