I'm a 55yo female who 1st tested 1-8-23. I remained positive for 17 days & although I've tested negative, am feeling just as many if not more symptoms now including now on oxygen at night,  but the brain fog is the one I'm most concerned with. Some days I can't even complete a simple thought like "I'm hungry. I need to eat." I've found myself in middle of kitchen floor not even being able to open a can of corn! This scares me beyond words. I wish there were more studies on brain fog because I honestly feel like I'm losing my mind but my Dr doesn't seem to be concerned with this at all.