For the past 3+ months or so, I’ve been experiencing very bad brain fog. It started about a week before I got a cold, and never went away. I went to see the doctor who told me it may be a sinus infection. After 2 rounds of antibiotics, it hasn’t gone away. My nose is not at all stuffed, but my ears often feel very full and I get a bad pulsing/tightening beneath the bridge of my nose. I can’t think straight and just feel like I’m living in a constant fog. I really don’t think it’s anxiety either because when this all started I was not anxious at all. I’ve also been getting very good sleep, exercise everyday and eat well. I’m really scared it’s a brain tumor. Has anyone experienced this? I can’t really get in to see a dr now, which makes me more anxious.