If there is white discharge on 21st day of period cycle what is the meaning? Continuation intercourse with husband from 12th to 18th day

It depends. Vaginal discharge will change throughout the menstrual cycle and can be a normal sign of the hormonal changes of pregnancy. On the other hand, vaginal odor can be a sign of bacterial vaginosis. Vaginal itching can be a sign of a yeast infection. Sometimes vaginal discharge can be a sign of a sexual transmitted infection. It is a good idea to get checked out.