The Past Few Days I Feel Full Without Eating Much,

the past few days I feel full without eating much, I am overweight with high blood pressure and just left a stressful job but have had an even more stressful week with a family illness. I'm eating too much salt but not drinking enough water. also too much caffeine, 1 or 2 cups of tea a day. some times coffee. but I feel extremely bloated and weigh more these past few days. I know I need to start moving more. Usually it takes me a couple of days of rest to get my body working right. I teach driver's education and spend a lot of time in the sitting position. I'm just not sure what is going on. I am moving my bowels and there is no blood or darkness. any ideas?