Sick of this Crap

Why is it that every time I get frustrated or angry at my dad, I'm "being too harsh" or I "don't have reason to be mad at him". I have EVERY reason to be mad at him. He ignores my birthday. He doesn't help me when I need it. He says he's sending a card with my insurance card in it but I find out that he hasn't even sent it yet. He ignores my questions and says we'll talk about it later. I have all kinds of reasons to hate him or be mad. But no. My father-in-law thinks I'm being too harsh. If he knew all the shit my dad's put me through he'd shut the fuck up and stop telling me how I should treat the horrible excuse for a dad I have. Plus I'm sick. Not just "oh I don't feel the best" kind of sick. Full blown ear infection/ sinus infection, pressure in my head, body aching, can't breathe, coughing up a lung, want to die, kind of sick. I really want this week to be over with. I need time to calm down and I can't seem to get it. I'm just so frustrated and upset. Everything is making me cry.