I had unprotected sex on aug 23rd and he came inside of me and my ovulation day was the 29the of aug. . .my period last 5 days long and my cycle is 28?

Missing question...: I am not clear what you are asking. Working on the assumption you are asking how likely you are to get pregnant, the risk of pregnancy is at its highest in the 1-2 days before and day inclusive of ovulation. Fertility is possible at most 6 days before ovulation and probably about 1 days after, but those 2-4 peak days are the key. Given the stated time frame, pregnancy is unlikely but possible.

Probably ok: You are probably safe, but i would have used the morning after pill. It is too late now, just wait for your menses.