I've been noticing some chest tightness over the past few days. Before that, I had this weird throat discomfort. It wasn't accompanied by any fever or cold symptoms, but I just felt like I needed to cough, though it wasn't exactly a cough and it seemed to settle down somehow. Anyway, this morning I woke up with a severe headache, and yesterday I ended up vomiting, but it was just gas, nothing serious. I felt slightly better afterward. Could you recommend any remedies for this?