I know this isn't an announcement but I don't know where to put it

I'm 6 weeks pregnant with my third and I just feel so crappy right now. my head is foggy and I just want to cry. I feel like I can't spend the next 8 hours pretending I feel fine when I don't. I work at a nursery as a financial administrator but our office is right at the front of building so I see parents in and out all day long. how do other people deal with it working whilst feeling crappy in the first trimester. I also feel like I'm going to vomit constantly