Constant headache, appetite. Care of me.

I am feeling always sick. I can't stay without tablets. For even small things i run behind tablets. When i feel small wind or breeze, I have a pain at the top center of my head. I feel hungry but when i take food, still i will feel appetite. I was an ulcer patient sometime back. But every doctor say my BP and sugar level is good. No problems in scan. But still i feel i can't take even little spicy food. I easily get more tension. I have split my food habits into 5 times. I feel always thirsty and i keep drinking water frequently due to this. I won't frequently go out, as i am afraid of what will happen if i don't find toilet. Pls suggest what is happening to me . I am 56 yes old woman. My husband is staying in my native place and due to frequent conflicts he is not understanding me and rarely visit to see me and he is staying alone. Only my son and daughter in law taking care of me.