need advise

i have been wanted to write about this for abit but have been putting it off because I’m abit embarrassed to talk about it BUT I just do not know what to do about it anymore.

for about 3weeks now my son keeps pooing himself. I think he’s doing it attention because he does it when I’m on the loo, bath when he’s gone to bed, on the phone, watching YouTube on laptop when he’s on the xbox and he has done it walking home from school. tonight I sat him down and  I asked him why he keeps doing this but he won’t tell me…its got to a point now that I have told him if he does not stop this I might not take him to comic con and that did hit him. he’s been having probs at school this week so he is banned from playing his games… thinking about going to the doctors but I don’t think they will even help.