Do you have a solution to reduce my symptoms that I have had for 5 days? Would it be ideal to consult, at this time?

I seem to have a cold. However, for the past 5 days, it has only gotten worse. I blow my nose a lot to get rid of as much of the virus as possible, but it doesn't help. I've had 2 cans of sinus rinse and syrup and it hasn't helped at all. I'm tired because I can't rest with all these symptoms. I started to cough a little and have pain in my lungs. Now, what should I do to solve this? Would it be better to go to the hospital or a clinic to see a doctor? * I did a Covid test and it came back negative *