Pregnancy and Work

I'll just found out I'm 3 weeks and 4 days! I'm beyond excited. I'm very sick but hey it's worth it. So before I found out I just got surgery last month due to torn ACL ( I'm clumsy). I'm almost fully healed but I've been off work for like 3 months almost. Luckily it's slow time so it works out. I just started this job I've been there 4 months. I'm a chef. Now with this pregnancy and the ACL I'm really worried I can't go back to being a chef. A. Loooooong Shifts (10-18hour) some days. B. With the job I do I feed 300-500 by myself. I do all the cooking C. So much heavy lifting D. Constantly on my feet E. I'm not sure I have the energy or stamina for it now.

Anyone have any ideas by chance? It's a great paying job especially where I'm living. And it's normally first shift unless some type of catering is happening which is a lot lol. I just don't know what else I could do I guess?