Feeling overwhelmed

I am currently 6 weeks pregnant with our second baby and we also have a 3 year old. I work 12 hour nights and am usually tired after my 6 nights on and have a hard time adjusting to "normal" life when I'm on my days off. My husband constantly tells me I'm lazy because I sleep during the day and it has gotten worse since morning sickness has kicked in. I am nauseous all day and puking multiple times. He tells me I need to get up and get moving. I try but when I do I just feel sicker and I tell him I feel sick and he just tells me your not sick your pregnant it's not the same thing. He works hard too and I know that I just don't seem to have the energy to watch our kiddo and clean up every little mess. Tonight I felt terrible and he just left to go to the bar, I begged him to stay home to help with our child but he told me I'm lazy and need to do stuff myself.

Am I being over sensitive?