Yes, with all of this you must feel awful. I hope you have someone around to bring you some chicken soup (the steam can help with loosening nasal congestion, but I don't think you have that).
I believe these are connected in that when you are stressed, and especially not sleeping your body runs out of the endorphins, adrenalin, and cortisol and also your body isn't getting any time to rest and repair itself. Which is why sleep is so important. This has been realized to be more important than realized in the past.
Acne is known to sometimes be related to stress hormones and sex hormone balance.
The jaw pain could be from several different things, and is hard to tell without exam of the mouth and jaw, and possibly a culture of or x ray. You need labs drawn to find out basic things about what is going on. The jaw could be from a tooth ache, and even from sinus congestion, as pain can radiate there. Possibly there is an infection. If it was swollen on the outside It might be that it could have been an inflammed salivary gland.
I have never seen a jaw infection or problem leading directly to a lung infection. I can't think of any mechanism that would cause that. You have probably a viral cold or fllu coming on and at the same time some symptoms that are bacterial.
Your lymph glands are inflammed which indicates your body is try to fight off usually bacterial but possibly viral infection.
I'm not sure about the lumps in your throat. It may be that you body is in an inflammatory response, or perhaps these are lymph related.
The sleep is really important for you and to rest right now in the day. It is better to take some time off from work or school until you feel better, otherwise you may end up needing to take a lot longer time off.
You may justs need to ask your family or friends to help you out with the medical costs. If you are going to a college campus, you may want to see if they have a clinic that you could go to first.
Sorry no answer that explains it all easily. I will be interested to find out what you find out, and yes you can write back after you accept, I always keep the posts open. And there is no further cost, until maybe later on if you had something totally new.
So get some rest! I hope you are ablle to sleep.