I texted my boss I can't come to work .. I know he will understand but my dad lately has not been…

I texted my boss I can't come to work .. I know he will understand but my dad lately has not been understanding how I been feeling and my body is hurting and I feel like a failure that I can't work but I hide the pain I'm in and my SO does know even b4 I got pregant work was hard cause of having my medical problems I hope my SO explains it to my dad I really couldn't go to work today