Should you trust your gut when you're sick?

I don't have insurance, but i've been feeling really sick for the past 4 days. Headaches, congestion, fever, chills, loss of appetite, dry mouth, sore throat, ears hurting, extra saliva and phlegm producage, green phlegm, stomach hurting, body aches, nausea and vomiting, shortness of breath, you name it. All the symptoms in the book. I've been taking acetaminophen, mucinex, aspirin, cold and flu meds, cough drops, cloroseptic spraty, etc. Nothing is helping. If it's the flu I know it last a week or so, but i'm worried it's not going to stop or it'll get worse and i'll be hospitalized. I just have a gut feeling something is really wrong and I don't know what to do..