I'm not a good son.

I'm not a good son. I keep my parents excluded from most parts of my life. My mother is not well, since three weeks already. I haven't called them since then to inquire. This morning they called and naturally my dad said he was wondering why I haven't called. He suspects something is wrong. He wonders if it has to do with them, if they have done something wrong. I denied, it's nothing about them. It's about me. But they called shortly before I have to go to work. I don't have the time now to explain what's going on with me. They maybe deserve to know but on the other hand I don't want to bother them with my problems, they have enough themselves. So I didn't talk. Shortly after the call my dad called back, saying he doesn't feel comfortable, wanting to know if something is wrong with me and Jelle. I told him I can't talk about things now as I have to go to work. It didn't comfort him but he accepted it. I told him we will talk in the next days. Jelle managed to tear me even more down by agreeing with them. Of course he is right, they are right. But when I explained to him why I didn't call them, what my thoughts are he interrupted me and said I should explain to them, not to him. Wow, that's support. Thanks for that, exactly what I need. Now I go to work, feeling down, sad, guilty and facing probably 400 stranded angry people because of the strike of our pilots today. Just what I needed on top of that.
I'm not a good son, I should involve my parents more. I never really did. I can try. But I'm still searching for the answers to all of my questions, how can I explain to them what's wrong if I hardly know myself?
I do love them. I can trust them. Yet, I'm so concentrated on myself that I forget the world around me.
I am sorry.