I’ll give you the benefit of the doubt that you are being serious. A fever is a sign of a bacterial or viral infection. Absolutely not a symptom of post finasteride syndrome. Fever and dry cough are the two most common symptoms are corona virus so there is a very good chance you have been infected, especially because it is circulating.
It is very contagious, especially for the few days after you initially develop symptoms. Don’t go outside. Go figure out what to do if you have coronavirus. Stock up on food for a couple weeks. Don’t leave your house or apartment, except when absolutely necessary. You absolutely can’t risk giving it to other people because it can spread exponentially and is seriously dangerous for older people and people with certain pre-existing medical conditions.
Your odds are very good if you don’t have the pre-existing problems that put you at risk. But do the responsible thing and stay home until you are better. This may be two or three weeks so be prepared for this.
Call your doctor to let them know. Do NOT visit your doctor’s office as they can’t help you and you are unnecessarily risking other people’s lives by doing so.
If you live in the US, you probably won’t be able to get tested unless you become a severe case. You’ll maybe be able to get an antibody test after recovery. Good luck.