Untreated Lyme Disease: A Decade of Struggle

Has anyone gone untreated/undiagnosed for Lyme disease for a long time and could you describe your experience? I have a debilitating mystery condition that has been suggested to be Lyme disease and the timing matches up to a period of time that I was the most exposed, these symptoms started less than a year after I was spending all my weekend time with a tick ridden dog that died before its 2nd birthday. I've been struggling with this for over a decade and I'm very sick pretty consistently.