Can long , thin, stretchy, and sticky white discharge be ovulation ? period ended 11 days ago

Possibly yes: Most women will notice a different discharge for 1-2 days around the time of ovulation. This is described as thin clear stretchy discharge that is like raw egg white. Ovulation usually happens about 14 days before the next period is due. This would be day 14 in a woman with a 28 days cycle.

Yes: The clear stretchy mucous comes from the cervix. It is clear, but mixed with vag discharge could appear white. The key is stretchy. Egg white stretchy mucous only happens at ovulation.