I have vaginal discharge that is alternating white and clear with no irritation or itch. infection or just due to my postmenopause status?

Vaginal discharge: It sounds like normal postmenopausal discharge. If you start to see blood, then you should see your family doctor.

Repeated questions: I'm pretty sure this is your third question (maybe fourth?) about your vaginal discharge. You're never going to get better answers on this forum. You need to see a doctor in person, or perhaps establish a direct care relationship with a forum doctor who can arrange for direct testing. But most likely you'll need to see someone in person. Good luck.