Does this sound like Pneumonia? What else could it be?

Sounds like clic flu symptoms. There's no reason to think it's pneumonia. For example, if you had pneumonia, you'd likely have trouble breathing. There's no need to call the doctor at this point--you should get better on your own in 5 days or so. If you find yourself getting worse after 3 days, then you might want to talk to a doctor. In the meantime, sleep a lot, drink lots of fluids, and while you will be laying down a lot, be sure to walk around a bit so fluid doesn't collect in your lungs. Be sure to cough everything out.