Tested negative 3 months post triple therapy but feel worse than before antibiotics

So since the antibiotics things looked promising for two weeks post therapy, minimal burning, anxiety, reflux etc. things since then have just been coming back one by one. Awful burning after meals or eating specific foods weirdly enough veg fucks me up big time with the burning.

I had/have ulcers but I would’ve thought they’d be painful straight after treatment rather than waiting two weeks to cause more pain. Brain fog is back with a vengeance too. Decided to finally retest and it’s negative?? I’m so confused because I’m 100% worse symptom wise than I was before I took the antibiotics.

Anyone else? I don’t want to question it but the symptoms kinda make me think that was a false negative