Could be a sign for sure! We were trying for 14 months so I waited until I was 1 day late to take a pregnancy test but if you haven't had anymore bleeding since then could be good news :)

@sev1226, my period is due in 5 days. I peeped saw blood. And haven't seen any since. Could it be implantation bleeding ?

I had implementation bleeding. It didn't happen right after sex at all. It happen about 10 days before my period was due. I was at the gym, had to pee, saw that there was blood on the tp so I grabbed a pad and there was blood on the pad but when I went to the bathroom for the rest of the day there was no more signs of blood after I went pee and no more since then!

Implementation bleeding happens right after you have sex . It's your period if it's two weeks after sex/ovulation (or four weeks from your last period).