Hi, i just turned 18 years old and i'm a female. well, i read somewhere that the average american gets sick 3 times a year. In my case, it's different. I get sick about 6 times a year and it usually lasts almost 10 days. I don't think this is normal. I've gone to the doctors everytime, and they can't figure out why I'm sick or how to aleviate me. When I'm sick, the thing that stands out most of my horrible sore throat. It feels like my throat is on fire whenever I try swallowing, and it constantly burns. I don't feel hungry, because everything i eat/drink just irritates my throat and brings back that burning feeling. I have lost my voice. This also comes with a runny/stuffy nose and a slight loud heavy cough.
I have tried gargling salt water many times a day, juices, hot soup, cough drops, eating garlic and fruits, etc. Nothing seems to help me.
I am a pescitarian, meaning I don't eat chicken, cow, or pig. I will eat sea creatures but i dont usually. However, last time I went to the doctors they checked how I was, in terms of being healthy and having enough protein and minerals, and they said i was perfect. I don't even know how my eating habits would affect my throat.
I also have a lot of cats around my house. Maybe 6 cats, some are long and short haired. They often come in my room. I didn't feel like they were an issue to my health, but the question came up whether I have an allergy to them or not. So the doctors gave me allergy pills, but nothing happened. Nothing worked. I was still the same.
Then I thought, maybe I need my tonsils out? And I wouldn't have this thing I have anymore. But, I read that tonsils are taken out when theres a couple of cases of strep/mono and I've been tested for both. I always come out negative. I can't think of anything that could be wrong with me. I am so lost and in need of serious help. I would appreciate an answer or a thought as to what is wrong with me, because I honestly am desperate.

Thanks for hearing me out and I hope to hear from you soon,
Ryanne