Ear infection or something more serious?

hol88

Hi all. Looking for some reassurance really.
Last Tuesday night I got home from work and felt strangely lightheaded, almost spaced out and suddenly horrendously exhausted. I pretty much felt like I was coming down with the flu. I expected to be snotty and poorly in the morning but after sleeping for twelve hours I felt fine, and felt okay all of Wednesday. Then Thursday at work I spent most of the day feeling like I was travel sick or claustrophobic, I can't really describe it. Like I'm going to pass out but I'm not going to pass out. Tingly type feeling in my head. And feel like there's quite a lot of pressure in my head and my ears. I was sneezing quite a lot but didn't really have any other cold symptoms. I went to see my doctor Thursday night who was as unhelpful as ever. He actually said the words "it's a mystery" when I describes my symptoms. He looked down my throat and listened to my chest but didnt look in my ears which I find a bit odd considering I said I felt dizzy. Took my blood pressure and said I was fine. So I just put it down to exhaustion and spent the next couple of days resting.
The dizziness is still happening. It seems to be worse when I'm eating or when I'm sitting down for a long period of time. It's putting me on the verge of a panic attack because I suffer with hypochondria and so I'm worried it might be something serious even though I'm trying to tell myself it's not. I think more likely that I have an ear problem but can't believe my doc didn't check them? Thinking back, before the dizzy spells I was getting tinnitus in the sense that I was getting a whistle in my ears for a little bit of time that would then go. So. Has anyone else had anything like this that turned out to be an ear infection? Thanks if you have bothered to read all of this!