Am I broken?

I feel like I can't feel empathy for my brother whenever he's sick because I just always feel like it's so unfair that he gets treated so well and I didn't. When I young no one ever really bothered to bring me to a doctor for anything so everything I had would just go undiagnosed. I sprained my ankle,my wrist and it's all just speculation because my parents couldn't be bothered enough to actually go get it treated. And now when I'm sick I play it down because I feel like it's expected of me. But whenever my brother is sick he's got all the attention. He's always been sick,he was born sick and has always gotten the extra attention that I was missing. It's really not his fault and I still love him but it just feels like I can't really feel the empathy I should for him. It just feels so unfair that when he's sick he gets attention and love and care and I'm expected to just suck it up and continue on,just because that's the way it's always been...