I am 13 years old nearing to the age of 14, I think I have a virus of some sort but I seem to need to go to the toilet ALOT but I can't actually poo, I can poo a bit but I just site there for around 30 minutes and I feel better when I leave the toilet. After a few minutes, I need the toilet again! and nothing comes out, I do have a stomach ache or pain and I have this weird pain need my trachea or the heart area, I'm not sure if it is heart burn but when I swallow nothing it hurts. Please help and give me some advice. Thanks.