I Just Had My Period On The 4th Of This

I just had my period on the 4th of this month my period lasts a whole 7 days I had intercourse on the 19 prior to intercourse I douched 2 days later on the 21st I noticed some spotting and as the day went on the spotting started looking a bright red color when I wiped I wore a pad and it wasn't a heavy flow of it the next day it started getting lighter and now it seems like its going away should I worry???