Help!!! Stool sample, blood sample negative for candida

I dont know what to do or what to think. I have all the signs - on Antibiotics for four years for acne, previous high Sugar diet. Now experience really heavy symptoms - chronic fatigue, really bad brain fog, bloating, dizziness, constipation, and really bad reaction to foods with Sugar or yeast. On really bad reactions I have vomitted.

Can somone please advise me. Now i dont know what to think. What can i do?

David (london)