Your blood is not clean, it's just had a viral infection and some of your cells got killed off with an injection of RNA. In case nobody's actually told you what a virus actually is.
A vaccine would have done nothing worse than that to your blood whatsoever and in fact would have mitigated your symptoms.
By the way, the fact that you only took two days off work when you're unvaccinated for a two-week infection - if I were your boss, I'd fire you just for that right there.