Trying

Hello all, i am trying to be pregnant. I bought my ovulation kit (clear blue). How many days after my period has ended can i take my ovulation test at home? I am unsure about when to take the test. I have 2 months supply. For instance my next period is expected to be on ended on jan 13 and they last for about 6 days. Lets say i will end my period on jan 18th then. So When should i do the ovulation test. Thank you😊