Forced booster jab by workplace

Hi all I am in my first trimester and gynae has issued me a letter of medical ineligibility for booster jab until 2nd tri (March 22) as I am on heavy preg support medications due to spotting earlier on. So I showed this to my workplace but no exemptions was given and was put on no pay leave (w.e.f 14 feb 22 until I get my booster. anyone facing this issue as well? is it a standard policy with other workplaces? With no pay leave, how am I going to pay my monthly HDB loan and my first born's school fees? I am not a frontliner so definitely am able to work from home and fulfil my duties since I have been doing that ever since I joined the workplace. Does any mummy have any experience? do you think MOM will step in or will it be futile? I am not anti-vaxxer apparently I was the first batch to get my first 2 doses of Pfizer in Feb 21. (have explained all of these to HR but was still ignored).