Help/advice

I’m currently 4-5 weeks pregnant. I had a miscarriage in April at 9 weeks. I work at a preschool. So there is a lot picking kids up to change their diapers, get them off another kid, to soothe them, cleaning up toys, and a lot of other things that consist on heavy lifting and/or bending. I’m a lead teacher and I have assistance to do the major stuff but I’m so afraid of losing this baby I don’t know if I just want to wait it out till my 9-10 week appointment and ask my ob or make an early appointment and see what else I could do to limit the Chance or losing this baby. But also don’t want to put on any rest or not have to go to work cause I need to be there. Just need answers! Or do you guys think I just need to relax and not stress about it all? Just don’t want to over work myself.