Lung cancer symptom?

Hi, I know that people have been posting here with more serious stuff. However, I am very scared and I just feel like I have no one to talk because people do not take me seriously. 3 weeks ago or longer I noticed that weird wheezing when I open my mouth and breath out. In the beginning I was like whatever but then after a few days it was still there and I become concerned. I do feel like I have an irritated throat and blocked nose but this is nothing new in my case... the wheezing feels like it comes from one side only when I open my mouth I kind of feel it, it’s difficult to explain. I went to see my Gp, he listened to my chest and he said that everything is perfectly fine and he can’t hear anything bad there and the told me that sometkmes this wheezing can last after a viral infection or whatever - I love how he just guessed. He sent me away with nothing. It’s been 2 weeks now and the wheezing is still there. I do have history of using Tabacco and pot. I’m 35 next week and I am really scared that this wheezing is a sign that I have some growings on my lungs ;/ I’m going tomorrow again to see a doctor but I’m already like going crazy ;/  I feel like my whole respiratory system is irritated, my voice get hoarse sometimes as well. I just really hope that this is kind of allergy, but inhalations, medicine doesn’t help, even when I clear my throat I still would wheeze. So what else Thant can be?;-(  I’m so scared