Bleeding after 2 days of protected intercourse by condom on 17th nov. is there any chances of pregnancy as ovulation chart showing 18-23 nov date.

Chances low: BUT take a Pregnancy test! Good Luck Dr Z

Low likelihood: It sounds like you are monitoring your fertility well. While ovulation charts are not perfect aids in predicting fertility, they are helpful. If you had PROTECTED intercourse a day before your chart suggested ovulation, I would say the chances of pregnancy are quite low, less than 1-2%. Best wishes!