I made the mistake of fighting off a bacterial infection on my own. Four days in bed, until I couldn't take it anymore and wasn't getting better. Bacterial infections have those symptoms. Tiredness, headache, sore throat, night sweats, fever, body stiffness and aches. No throwing up though, which tipped me off. No pun..
If there was something to learn: Probably just need antibiotics and it'll be gone in 72 hours. I won't try sleeping it off again, wasted four days in misery thinking it was a virus.