I think you may be having Gastritis
,because of Antibiotics.I think you are vomiting
Bile.Hope you are not forcibly doing that.
All the complaints that you have mentioned are Non specific one.They doesn't fit into a specific disease.
But,You can add Proton pump
inhibitors along with antibiotic which protects the upper Gastro intestinal tract.If you are taking powerful antiinflammatory drugs,please stop and replace with safer drugs.
All the best.