Feeling overwhelmed

I am 5w4d with our second baby and I feel completely overwhelmed. My son is 17 months old and is pushing my buttons. My dad is doing construction on our house so it's all torn apart. I am a SAHM and all of the errand running, grocery shopping, housework, laundry, and everything else falls to me. My husband works and is gone from 7am-6pm. I just found out that I'm severely anemic with this pregnancy and I'm worried about that.  I just want to sit down and cry because I am so stressed!