Had unprotected sex on the last day of period 10 days after periods, was having dark brown discharge which lasted for 7 days am i pregnent?

Doubtful but possibl: Fortunately reliable home pregnancy tests now exist. They are accurate within 2-3 weeks after conceiving. Conception is not usually associated with unusual spotting or discharge, but that doesn't mean one can rule out pregnancy is one is having unprotected intercourse.

Check a test : The only one who can answer this is you. Check a home pregnancy test.