My discharge has changed this month from being white, thick and sticky to clear, stretchy and thinner as it is during ovulation. what could cause this?

Menstrual changes: Have you been checking your cervical mucous regularly? Your mucous is expected to change during each cycle from stretchy and thin during ovulation and thick and sticky afterwards until your period. It is not normal for mucous to stay the same consistency throughout the entire month. No worries if not malodorous or causing other symptoms.