Respected doctor, i?m 35 years old, male. Before 1 1/2 year a doctor diagnosed me wrongly and gave me once ocas (tamsulosin. After taking medicine for one week I realized that my stomach problem and ejaculation problem. I feel that my stomach is not holding food whenever I eat. And I get lot of pain if stand or even walk very little after eating food. Can anyone tell me, what is the problem? And advise me treatment.