psych suggesting fmla but i can't afford it, anyone have experience with this?

i am finally getting treatment for my cptsd and i really like my new psychiatrist. she's around my age and seems to take me seriously.

i've been having a lot of issues with anger and impulsivity and i just started my medication. we talked about adding lamictal to my routine if im still struggling with anger at work.

i told her i have a lot of fear surrounding losing my job because i get very angry at my coworkers and the customers. i'm new at this job, only 2 months and my coworkers don't like me much. i dont blame them. i'm not proud. ☹️

my psych mentioned fmla to me and how it might be necessary while we play with different medications. she suggested it too so i dont lose the job i just got and i can keep my insurance.

my job does offer short term disability insurance, which i signed up for when i started. i don't know if that matters.

does anyone have experience with this? i have around $900 in bills every month and only $3000 in savings so i cant afford to go without a paycheck. i know if my symptoms are out of control i can't work at all, but i still need money to get by.