Period on 4th of august until 10th august had sex on 14th of august on 18th of august had creamy white discharge all day could i be pregnant?

Too early to tell: You probably ovulated around the 18th of August. You have about a 1 in 5 chance that you would get pregnant from unprotected intercourse on the 14th. The change in discharge may have been due to ovulation; it isn't a sign of pregnancy. If you want to know if you are pregnant, Wait until you miss your period and then do a home pregnancy test. Best wishes!