Working whilst pregnant?

Hey,
So as you know I“m 5 weeks 5 days pregnant, I work part time as a waitress and I have not worked since finding out but did last night.
I woke this morning with pains all over my body, particularly in my left rib cage that kept me up all night, I can’t sleep as my body is always uncomfortable. I don’t have cramps, or bleeding, my belly is fine, it’s just that I feel like I’ve done 100 sit ups, all my muscles feel sore, and I“m not particularly fond of this sore rib, it hurts when I breath.
Do you think I should quit my job?
All the running around and carrying heavy things probably isn’t good for me?
And I’m assuming it’s normal to get aches and pains during early pregnancy but can anyone confirm this?
Thanks so much