I was noticeably sick with it for about 3 weeks, from the end of February to the middle of March. The same symptoms you hear from everyone else that didn't get fucked over by it. Fever and chills, pain/tightness in chest with shortness of breath, sensitivity to light (i don't think you hear this one too much but it was really standout for me compared to how minor most of the symptoms are), erratic blood pressure, and low O2 levels.

Only feared for my health a few times, the most alarming moment was when I almost collapsed due to a combination of extremely low blood pressure and the reduced O2 levels. Never had an experience like that before and it was scary, but it was brief. That happened at the start of the third week. By the end of the third week the fevers and chills had completely gone, the light sensitivity had reduced, the chest pain was still bad but had clearly started to reverse.

So, long story short: Not the flu. Very different, in fact. Not really any worse either, though. Again, the real danger to this virus lies in how contagious it is. If you take the flu statistics for any year and scale them up to the hundreds of millions or billions, those death numbers are sobering.