I agree with others who answered, sounds like either the flu or since you mentioned sinus pain and congestion..also sinusitis. Now if you have the flu you can't do much about it but drink lots of water, rest, take motrin like meds for pain and fever..and rest like crazy! Don't bother with meds besides advil or motrin for the flu. As far as sinusitis..if you tilt your head down like to pick something up off the floor and your head hurts alot..then it's your sinuses most likely. Also if you go from say a hot room to an air conditioned one and back and you feel more pain or stuffiness..then it's sinuses(which don't react well to sudden temp changes). I hate to tell you though if it's an infection then you will need antibiotics to get well and of course that requires a Dr. visit. I suggest for something simple like this to go to a local clinic. And I agree you need to seek out a Dr who you can trust and tolerate that you feel you can go to if there is any problem. I am a medical assistant and have worked with some bad docs and good ones..you just have to search for the right one.
Home care: ..fluids, Advil/Motrin..Mucinex D is a very good decongestant med that works better than Sudafed in my opinion, and rest.
Hope I have helped!
Professional Medical Assistant and also a suffered of sinus problems..ARGH!