He kinds sounds like my dad, I would be terrified to tell him I was feeling sick.. because he would sit there yelling at me telling me all the reasons why I got sick and how it was my fault. I would call my mom at work to tell her I was sick and would rip my dad a new one for making me to scared to even tell him. Your S/o will get over I think it's more so that's he's the one to take care of his baby while hes sick that's he's more mad about. He will soon come to realize kids gets sick and hurt ohh so often!! Good luck mama