Far too early to tell. You need to wait two weeks from the last time you had sex and take a pregnancy test with first morning urine.
Ofcourse, there is a chance that You could pregnant however it is still early and would be impossible to find out this soon.
It is possible You had some mild bleeding a few days later because of the sex however only time will tell
No, if you had a period after the intercourse you cannot be pregnant.
It could have been implantation bleeding, she said her period is usually 7-8 days
Implantation bleeding doesn't occur after that short of time, IF it even happens.
It also would cause period like bleeding for 2 days. Spotting 7-10 days after sex is more likely to be implantation bleeding.
sorry above should read
"...also would NOT cause..." sorry : D