6-7 dpo

Ok so i was like 6-7dpo and me and my hubby had sex and there was like pink/brown spotting mixed in with the semen when I went to pee and clean off.....i thought my period was coming early because i was cramping too...so i put on a pad....well woke up in the a.m. and nothing when i wiped again and now day after and had sex again and no spotting.....was that implantation u think??