hi, i am having abdominal bloating and gurgling since quite long time. also sometime i am having loose stool. i also notice that my stool is not like before, now it is thick. i was doubting that it could be an std causing that, but all test i did during one year period was negative and doctors said no need to repeat these tests. test done was hiv, hepatis b, hepatis c, siphilis, urine test, all blood test etc. also i did ultrasound of abdomen and chest x ray, which states that everything is fine. but i still having these symptoms whish is worrying me. i am very stressed and my doctors even a psychologist told me that this is due to anxiety i am having. i want to know what are the possible causes and if really anxiety can lead to this ongoing and continuous symtoms. thanking you in advance.