I was so sorry to read your post. Not having a desk cleaned with Lysol is pretty minor. Being called disgusting is down right abusive. You are not being paranoid, that was petty and ridiculous.
I would contact a disability rights organization asap-free help with lawyers and talk to someone who can help. Having a disability means that to perform as those without one is not possible unless we receive help, and it is up to the employer to provide us with assistance. If they have not been following the accommodations they are the ones in trouble, not you.
You are not paranoid, you need someone in your corner.
I contacted the disability rights org in my state, and they are quite powerful and helped me keep my job. Helped me write up accommodations and a new work schedule when I got out of the hospital.
Best of luck, you are not alone. Am sorry for your stress, I know how that feels, and wish you well with the birth.