Hello Doctor Can You Please Give Me Some Answers, I'm

Hello doctor can you please give me some answers, I'm hypochondriac and I worry about everything. My stomache been hurting with nausea a lot lately, just started taking antibiotics for cough mucus from urgent care, been getting weird feelings in my head, anxiety kicks in, not sure what's going on, and I drink water now cause im convinced I'm dehydrated. Please help me some please.