Then it's not Lyme
can be tricky -and you want to make sure you see someone like an Infectious Diseases doctor who knows how to treat it.
The diagnosis is actually based on clinical findings, and the lab testing is generally 'supportive'. Since you're Western blot is negative, then it's very unlikely you have Lyme. There are other diseases that could cause 'Lyme-like' symptoms -and good to get evaluated