>abstaining from meat for a while, or sometimes eating vinegar, or sometimes certain herbs like black pepper.

I don't think those things can really kill protozoa like Giardia and entomoeba histolytica. Certain foods will make you fell worse and not really kill anything, this is most likely the case.

>For one to three days I start feeling abnormally tired, like my blood pressure has dropped. Then it turns into that

IIRC Garlic can lower blood pressure but I could be wrong... Are you taking a lot of Garlic?

>plus dizziness, then progresses into sort of a colic/anxiety. This part is accompanied by a sensation that my whole abdomen is filled with gas, not just my gut, but

I was having something somewhat similar. It turned out I was having low sugar. I would get more drowsy and dizzy then normal and then panic with a "omg I'm going to die" brutal feeling. Eating something with carb would make it go away somewhat quickly.

You can get one of those glucose meters if you think this is something that is happening to you. (and talk with a dr ;o)

>chest, lungs, sides, pretty much everywhere, gas that does not move at all or maybe trapped in certain places. Then if it gets worse it turns into a sort of pain that seems to come from my whole trunk area, which turns into extreme nausea and constant vomiting.

>I went to the hospital once for it, but of course they had no clue. I was able to stop by eating meat and taking some proton pump inhibitor which they said also addresses h pylori. but no one even diagnosed my with pylori.

Apparently pylori is not so easy to diagnose, but that does not mean you have it.

>There is never any diarrhea with these symptoms, the worst part would be the pain and vomiting.

>Does anyone have this type of thing while taking the protozoa medications? I don't think I could last more than 2-3 days on meds if this happened.

Are you taking protozoa medication? Are you planning to take it? As you might know, pylori is not a protozoa. Have you been diagnosed with protozoa? Which one at which lab?

>After reading here for a while I think more and more that it is some sort of atypical protozoa symptom, maybe since it's been chronic for a long time.

>At my best I can keep all these things in check, but it's always lurking there, centered maybe in lower area below the navel.

It's possible that you have H pylori and or a protozoa. The thing is to get properly diagnosed. Labs are not very reliable and I have had many false negatives and some positives for protozoa.