i finished my period on 17th november had unprotected sex on the same day went to the loo today 21st november and there was blood wen i wiped any one know wat this could mean

Hello Anon

Thank you for writing.

The only thing I can think of is that this blood was residual blood left over from your period. This can happen in the days after a period.
The risk of pregnancy is very unlikely but you can test if you don't get your period next month. If you have further questions, please contact your doctor.
Best,
Susan