Thanks Gerry and Kimberlee for your replies. We are ttc. I really hope its implantation bleeding. I'll keep you posted.
I went through the same thing as you, and I just found out I'm pregnant yesterday, so it is very possible you can be. Hope this helps.
It could be, or it could be caused by various other things like infection, or maybe even the sex, although I've never personally had spotting after sex until I got pregnant. Are you trying to get pregnant? If so, I hope you get your BFP! :]