Oh shame. Viral infections are crap, cause no antibiotics can help, only some TLC and time is needed.
Nursie advise: drink lots of water, eat nutritious food if you can tolerate, do lots of respiratory exercises especially when in bed, walk around or go outside for fresh air if you can. Lying in bed will only make it worse, from time to time you need to move to loosen the sputum in your chest.

Get well soon, take care! Krys