freaking out. please give me words of wisdom

Okay, so I just found out yesterday that after almost 3 years of TTC my husband and I are 4 weeks pregnant. I'm over joyed, but I'm scared. I'm a big girl, and I've been in this journey so long, so I know all about chemicals and miscarriage and I'm absolutely scared to death.

I'm afraid if I move wrong, bend over wrong, stretch wrong or anything I'm going to hurt something and not carry this baby. please help me get out of my head. I want to enjoy this, but I need to know that's not how it works. I need to know I don't have to worry about sleeping wrong and causing a chemical or miscarriage. I sound insane I know....