I have flu but my company needs results of covid 19 they insisted i get tested and bring proof before i can resume with work. at the moment i only have blocked nose, a bit of coughing, and headache. ?

Get tested: In the US, some companies and states are testing anyone who wants to be tested and those who have been exposed. As people can be asymptomatic or pre-symptomatic and be spreading COVID to others, many companies do have this policy. Although a negative test only means you were negative at the time of the test, not after, this can be somewhat helpful. If that is their policy, get tested. It's easy.

COVID 19 vs FLU: There can be a significant overlap in symptoms between influenza and COVID 19. Unfortunately, testing can sometimes be the only way to accurately distinguish the two.