It is quite simple to find out if you have Lyme or just MS: Take 4 weeks of doxycycline. If the bugs start to die, you will notice it, believe me... MS patients should NOT have that reaction.
Another way to be sure is to do a DFM test
/en.wikipedia.org/wiki/Dark_field_microscopyThat is how i've found out i have lyme (after 3 negative ELISA tests). After i could see the critters running around, i paid for a few more expensive tests and got the confirmation.