Last month I had 4 days of spotting starting at 9DPO. I never spot so I was very hopeful that it was implantation. I read that HCG starts to be produced 2-5 days after spotting. I took two pregnancy tests after a few days. Both BFN. Shortly after, my full force AF showed up. :(
It definitely could be either and all you can do is wait a few days a test! GOOD LUCK!
i had extremely light brown spotting a week before my period was due and it ended up being implantation bleeding. however, mine was accompanied by cramping from the implantation. they were mild, menstrual-like cramps starting 6 or 7 days after i ovulated and they lasted a few weeks, on and off...
as alayha said, wait till your period is due and take a test. good luck :-)
It could be either. Only thing to do really is wait a week and test.