Help ! When should I ??? 👍👍👍

When should I Take a pregnancy test IF I HAD SEXUAL. INTERCOURSE ON 10/14/15 AND BEEN HAVING UNPROTECTED NOTE (HAVENT HAD A PERIOD IN YEARS DUE THE MIRENA IUD I HAD ,BUT HAD IT REMOVED THAT SAME DAY I HAD SEX AND ON 10/17/15 I STARTED SORT OF BLEEDING AND SPOTTING FOR 2 OR 3 DAYS ) AND all this 13 days I been still having SEX TILL THIS DAY? WERE TRYING TO CONCEIVE A BABY ME AND MY HUSBAND.