Bloated belly with stool urge. help plz.

Short, organized English version: I feel bloated after dinner at home. In the morning around 8 AM, I pass stool but don’t feel fully clear. I don’t get another urge immediately, but after eating at the office, I feel the urge again around afternoon (about 4 PM). Sometimes gas passes or a small amount of stool comes out, but the feeling of incomplete evacuation remains. I can manage until I return home by 8 PM, and then I don’t pass stool again. When I eat heavy food at functions or events, the problem becomes worse. Early morning (around 5 AM) I feel an urge but only a small amount comes out and I still don’t feel clear. Again at 8 AM before office I pass stool, but the incomplete feeling continues. At the office, I constantly feel the urge to pass stool, with gas passing frequently. The stool also appears darker brown than usual.