Hang on or quit?

I'm currently 28 weeks in, and it's getting tiring day by day to go to work. Feel unmotivated and exhausted all the time. I had threatened miscarriage a few times in my first and second trimester and was on HL. Workplace told me I can't keep taking MC and HL as and when I like. Sick and tired of putting on brave front to work. What should I do? #firsttimemom #advice #pregnant