Headache for that past 3 days that won't go away. sweating a lot especially when i'm asleep?

? pneumonia: A number of concerns, possible viral or bacterial bronchitis or pneumonia. With the headache and nite sweats, likely fever. Even tuberculosis could present this way. And of course, COVID-19 is on the list. See your doctor, get a diagnosis and an appropriate therapy. Hard to say how consequential this will become.

Need to examine: It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. Avoid secondhand smoke as that may explain all your symptoms. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/.