I think i'm about to be fired, advice please

Hi everyone, my name is Cindy. I will try to keep this as short as possible. I was diagnosed with epilepsy about 5 years ago after a second generalized tonic-clonic seizure (grand mal). But no, not me! I was in denial. Then I started having temporal lobe seizures (aura). Still in denial because of all the stereotype. When I had my third grand mal, I hit my head hard and had a brain bleed. Okay epilepsy, you have my attention now. I just happened to be on a 90 day unpaid leave of absence from my job to help a friend with disability 1600 miles from home. I went home after 30 days, because I had to help myself before I could help friend. My neurologist pulled my drivers licence for 6 months, no work, and put me on 1000 mg of Keppra. After 45 days and 2 more doctor appointments, I could go back to work, but couldn't drive myself the 80 miles round trip. I rode with a co-worker. Doc also increased Keppra to 2000 mg. The increase of Keppra's side effects were starting to drag me down. I barely managed to drag myself to work/home. After the 6 months Doc released my drivers licence, and increased Keppra to 3000 mg. This increased kicked my back side. The side effects became worse instead of better over time. I started an arguments with co-worker, I was either crying, angry or sleeping, I was messed up, looking back I don't know I did it. After another 3 months, My family doctor suggested I take go on short term disability until the side effects got better.He wrote me letter for work. Short term disability claim was denied from employers (Mutual of Omaha) Appeal was also denied. 60 days later: (after calling Neurologist several times a week) Neurologist finally lowered Keppra to 1500 mg, (I lowered it to 1000) he also added 600 mg of Trileptal. 30 days later I feel pretty good, I think im ready to go back to work. I contacted work, told them I was close to being able to return. Now, the main HR person from Corporate office is flying out to meet with me. I think they are going to offer an incentive to quit (buy out?) or fire me. They know I have epilepsy. Can they do that? Isn't that a bribe to quit? I have been with this company for 10 years!