what can you do when you so ill,and your boss ask for or demands drug test ,caused me alot humiliation & pain?

i went to work on this day knowing something was not right recently loss 40'lb. the er doctor said that my dilantin level which i take for seizures was so high i could have had a stroke.dont know why, i was acting like i was confused, unstable and i had fell twice. i've worked for this company for 3 1\2 years she knows my health issues, but instead of seeking medical for me she called me in the big bosses office and accused me of being on something, i was so upset but better yet i was sick. iwas taken to the e.r. where they did blood test and the only the thing they found was the dilantin was out of sight. no other drugs. i feel so embarressed and humiliated that she accused me of this , i know that the hospital where i work knows that she went about everything the wrong way. she has called numerous times but i just cannot talk to her right now./ also i spent 5 days in hospital it was diagnosed that my dilantin level was to high also i was badly dehydrated. thank you