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Hi there. Your post suggests you have multiple possible reasons for these symptoms...hormonal changes, B12 deficiency, vit D deficiency, anemia, sinus issues and probably stress and fatigue as well. None of them suggest a brain tumor. The chances of this in someone your age is extremely low. If your symptoms come and go, this reduces the risk even further. If you have had a normal neurological exam by your family doctor, this makes it even less likely.
Do you have any follow up questions? Let me know if you do and I would be happy to help further.