Isn’t this rude for my manager to say??

I am currently pregnant and now he has us on 12 hour shifts and it’s killing me. Like legit. And we can’t sit down. So I told him I would be dealing with this shifts SO much better if I wasn’t pregnant and he said “oh here we go with the pregnant excuses” and I walked away. He doesn’t understand he has no kids at all. There’s another girl that works here who throws up a lot (I think she does it to get out of working) and he babies her and sends her home ALL the time. She said she just is sick for over a month now. But when my ass is puking or not feeling good I got to be my best I know there’s LOTS of favoritism, but wouldn’t you be offended by a manager?!?