implantation bleeding?

I'm 3-4 DPO and heard that implantation usually takes 6-9 DPO. My ovulation was tracked with OPKs so I know when the LH surge was and when it died down. My boyfriend and I had sex and he wasnt any more rough than usual and he went in just fine so there shouldn't have been any bleeding, there was also no pain. I went to the bathroom and when I wiped there was a very minimal amount of blood. Whats the chances its implantation bleeding? We've been trying for 3 month and I'm trying so hard not to get my hopes up or excited. I shouldn't be able to test till the 3rd, that'll be 10 DPO. Thanks in advance.