I have been feeling really strange. I thought thought I just had a really bad migraine but a lot of other symptoms followed shortly after it, nausea, some congestion, achy, dizziness, a little sinus draning, slight ear ache, my head feels very tight and heavy. I thought it might be mucus on my brain and wanted to know if it's serious or just the stomach flu . Some of these symptoms have past but my head is still very tight.