Make sure if you rub your stomache that you do it in a clockwise motion. Rubbing counter clockwise can result in increased constipation and can cause problems with your intestines.
For constipation, I use an acupressure point in the arm. The point is found when you bend the arm - for example, place your right hand on your left shoulder. At the bend of the elbow, use your left hand to locate the acupressure point about halfway between the crease of the bend and the bone. Massage that point for about 15 seconds, then switch to the other arm. Back and forth. I also do this while standing. Usually works within 10 to 15 minutes at most. Also, I have cut out wheat and all gluten grains. I did not think I had a gluten problem but found out that I have that sensitivity.
I tried Donna's suggestion on acupressure and it works!!! I rub not only my stomach but where my colon is. Also I found taking 2 tbsp. of molasses morning and night followed by acv in tea and then the acupressure works every time for me. I don't have to sit on the crapper for 15 minutes anymore.
Every morning, before you get out of bed -- rub your tummy with your fist, not too hard, gently, but make an impression, only for about 10 seconds. It may take two mornings of rubbing, but you'll never be constipated again.