I'm scared of pain
What do you mean? Are you afraid of being hurt?
I think I will be inflicted with physical and social pain and no one will help me.
That sounds really overwhelming. It might make it harder to live your life if you're constantly worrying about being hurt. You should try to find supportive people in your life so that if you do get hurt, you'll have people there for you.
Ah I fear that I'm going to experience some sort of agony and this is a temporary act of pain. Nobody will ever see me cry about it.
It's okay to be afraid of specific things, but if you're fixated on this idea, you should talk to a professional. All you can do is try not to worry and try to make friends with supportive people.