Sounds like you may have more than one thing going on. It would be nice if it were just the water/flu, but I don't like the sound of the panic attacks/stars. Exactly when do you see stars? When you get up in the morning? After eating certain things? How long has this been happening? Before the nausea/flushing started, or just recently?
FYI, stars can be a big danger sign for blood Sugar problems. What kind of doctor are you going to? Have you been accurately tested for reactive hypoglycemia as well as fasting hypoglycemia and diabetes? You might want to revisit the long post that I send to you a month or so ago.
Hulda Clark says that we shouldn't flush when we're sick. Andreas Moritz says that a lot of bad things can happen after flushing if funky stones get stuck in the colon, which he says is not uncommon. He strongly recommends a colonic on the second or third day after flushing to dislodge these stones.