I had very horrible side effects from Levaquin for an asymptomatic infection I was diagnosed with. They gave me 12 hour doses, which I took twice .. I had fever, nausea, severe joint pain, and a lot more.

Later, both in the US and the UK, future doctors, when describing this to them, said I was misinformed, that probably I was sick, these are not side effects.

No, they're misinformed, and I'm deeply suspicious of the medical profession.