Working during twin pregnancy

Hello ladies just wondering when you stopped working while pregnant with your twins. I am going on my 8th week so I'm trying to plan ahead. I am a nurse in a rehab setting so I had 30 patients at a time (very stressful). Although I'm only 8 weeks I feel like I've been hit by a bus when I leave and the whole next day lol. I know many things can change throughout pregnancy which can effect how long you work. I'll ask my OB when I go for my first appointment as well.