So about two days ago, I started feeling a cold - I'm assuming - coming on. I'm at work now, and I…

So about two days ago, I started feeling a cold - I'm assuming - coming on. I'm at work now, and I can barely hear anything, there's popping in my ears, my nose is stopped up, my throat is itchy and stings, my right tonsil is swollen, and movement exhausts me to the point of almost passing out; makes me very dizzy. Can anyone tell me what this is, if it isn't a cold? And what I can do to stop it? 😖😷