Feel like I’m losing it

Y’all please tell me I’m not crazy and that breaking down and crying is a normal part of pregnancy. That the little things that feel like big things are normal and that my husband telling me that there is something wrong with me is not true. Im so tired and the little things overwhelm me. I work with mostly men in a truck shop dealing with Aerosol cans and lifting heavy things. I am worried about my job and how I’m supposed sleep and how overly tired I am as well as emotional. I’m 8 weeks pregnant and I just feel out of it. Someone help.