I deal with chronic sickness and pain ....depression makes it worse and feel "all consuming" whereas mania seems to provide a bit of relief from it all.

Things that help me which you also have access to are immersing my head in very warm epsom bath water. Very effective for headaches. Heating pads and or ice packs on the head are also good. Put your head over a pot of steaming water with some tea in it (peppermint or camomile). Use a vaporizer and some Vicks. I will also sometimes take swigs of niquil which helps a bit and will often help me sleep. Get lots of rest....drink fluids....stay hydrated and keep mucus thin by drinking extra fluids....take some vitamin C.

I'm sorry you are feeling so bad and I hope you feel better soon.