If your weakness started in both legs at the same time it doesn't sound like ALS. From what I have read about ALS and from reading my fellow PALS starting symptoms.... ALS starts at ONE area and then progresses. A neurologist is the one that will do the EMG (needle) & the NCV (electric shocks) tests and read them to see if they are "dirty". Then the neurologist can refer you to your local ALS clinic. You can always go to a different neurologist and see what they say. If the second neurologist says you do not have ALS I would be thrilled with that answer. Of course you will want to find out what is causing your symptoms so don't leave until you have a referral to another doctor or different testing.