I don't know if anxiety can cause this

[Iamanxiousaboutmyhealth]

Let me first start by saying that I am 22 and I have always been anxious about my health I haven't been diagnosed by an anxiety disorder because I wasn't confident visiting a doctor. I have had episodes of health concern before this one but this one is really bothering me. I have had near constant dizziness even after I wake up from a sleep. My stomach is achy in a dull way. And yesterday what added to my concern was that I smelled rotten eggs twice  in two different timings given that I am sure its not my house's smell because no one else smelled it and also I got the symptom before feeling anxious. And of course reading online got thinking about auras and strokes and I am very worried right now that there might be something serious. Is there any differential diagnosis to smelling rotten eggs or phantom smells I mean can anxiety cause this. Note: I have a mild pain under my right ear near the jaw area.
Thank you and I hope you give me some help or advise.

[Iamanxiousaboutmyhealth]

Every time I try to take the decision and visit and doctor I find myself in denial of what's happening as I had a previous episode of a doctor visit related to swollen lymph nodes or at least lymph nodes that I thought were swollen and the doctor denied that there is anything of concern and that they of normal size. So I think this incident made me think alot before going to a doctor

[Kejinr]

I know you don't feel confident in visiting a doctor, but it sounds like a good idea to do so about now. Sorry, that is all the advice I can give.