I have been coughing for around 3 months now, with a feel of air flow on my throat. I went to my family doctor, who said it was reflux from my stomach that went out to my throat and made like red things on my throat that make me cough. I wasn't convinced so I went to another doctor who said the same and gave me Esomeparzol to reduce stomach acidity (Even I don't feel an acid taste at all), and that made me go to an Otolaryngologist who said that I have allergies in my throat due to my nose secretions and he did Nasopharyngolaryngoscopy to be sure of that.
I am not convinced. I am not seeking any medical advice here. I worry that I have a tumor in my lung that makes me cough (though no blood, or anything else other than the cough for 3 months now). I know my doctors are right. But how do I stop being nervous? How can I trust my doctor ?