Pre-eclampsia but boss not very empathetic.

I have been diagnosed with preeclampsia and was admitted to hospital a week ago. I requested for kkh and private gynae to write me a letter to recommend wfh. But my boss insist I should go in to office 1 to 2 times a week despite having the letter.. Anyone else having preeclampsia and continued working? I notice my BP is always high always at work.