constipation

Hello, I am new to this site. Constipation and diarrhea have always been a problem for me. I can get going regularly for a while as long as I get up at the same time, but often get behind on weekends when rising maybe an hour later in the morning. It is especially bad when I travel and rely on laxatives. Basically when my daily routine is changed, I become constipated for up to 4 days, at which point I take a laxative and nearly explode. Hemrhoids have become worse and when the bowel movement is forced there is blood on my stool. Eating out is almost guaranteed diarrhea and stomach cramps. I am a healthy eater as I prepare all of my family's food and my grocery basket is always full of produce. Today I am feeling plugged up and uncomfortable and have not had a bowel movement in three days and even before that did not empty my bowels completely. Could you please suggest the best enema bag/procedure as this will be a first for me. Once I get things moving today I am going to further educate myself on bowel cleansing before it becomes a serious problem. I am 44 years old.