I have had sinus infections and issues with my sinuses

Patient: I have had sinus infections and issues with my sinuses my entire life. jm now 32 and for over 3 months i have had a sinus infection. My symptoms include: stuffy and dry nose, head ache feels like its going yo explode, sticky white/yellow mucus drainage from nasel cavity, congested cheast that feels like a wet cough that wont come out completely, short of breath, dizziness, seeing little dots, heart burn and nauseous,tender neck/back, and body weakness. All of this has been going on for about 3 weeks and no matter what i try it will not go away. The last 4 days i cannot smell and theres a terrible taste in my mouth all the time. I recently had a cavity filled by my dentist and she said it was very close to my sinus cavity And gave me penicillin just n case. I had a extremly bad bacteria infection about 4 years ago after having a tooth pulled and i almost died because my immune system was attacked so badly and all the antibiotics i was prescribed. So i am scared to death now and do not know why im not getting better. The doctors keep telling me its just allergies, but i know my body and i know its more than just seasonal allergies. Anyway i am at my wits end and do not know what to do, but it has gotten worse daily. please if you have any ideas or could help me

Doctor: