you probably do have a bacterial infection going on somewhere.
the loose green stool is toxic bile coming out. take your charcoal before each meal so that it will bind with the toxic bile. you could try also adding in some Bentonite clay. lay off all the supplements until things calm down.
i think the salt is also a good idea because it looks like you are having some blood pressure swings and it will help with dehydration. it might be able to eliminate the dizziness.
i'm guessing that you may not have had proper bile flow for a long time and now it's unblocked, but the bile coming out is toxic since it's been stagnant for so long.
if your body is now dumping bile properly you will need more fluids in general. if you were low in sodium and then drinking more plain water this could make your sodium problem even worse.
as scary as it all sounds, if this is correct then you are on a good road. once the bile normalizes you might feel a lot better. but who know, it sounds serious too and it's hard to make a good guess.
are you eating much fat with meals? have you changed your diet? if you added in more fats to the diet recently then this could also provoke a change with bile production.
i've read that Antibiotics can be stored in the liver, so you could be poassing some really toxic old Antibiotic laden bile.