I have a cold.what do i do?

Colds, Covid-19: Most important, check with your doctor or primary care provider about possible testing for COVID-19. Whatever the cause, drink fluids, consider nasal decongestant (or nasal saline spray), and aspirin or acetaminphen to control headace if necessary or high fever. There is no cure: it is often said that without treatment, colds clear up in a week; with treatment it's only 7 days. Good luck.