What you are all describing sounds very much like the symptoms of IBS. This causes severe stomach pains/cramps and diarrhea/constipation that can last several days and then disappear and then come back again, or it can be constant.
These symptoms do not have to mean that you have anything seriously wrong with you, however, IBS is diagnosed on a basis of excluding all other possibilities, i.e. when blood tests and ultrasounds come back negative, then IBS is likely.
To help your symptoms you need to increase your fiber intake. Metamucil is safe and is a water soluble fiber supplement and can be taken twice daily with about 6 to 8 glasses of water. This is as helpful for diarrhea as constipation and will help to bulk up your stools. You gut needs fiber to function properly.
Acidophilus caps taken on an empty stomach twice daily will help restore the balance of good bacteria in your gut, which you lose with constant diarrhea. Once restored, you should find that you have less diarrhea, less bloating and less gas. If you don't want to take caps, then eating live yogurt will help just as much.
If you have diarrhea, you may also find it helpful to take some Calcium supplements. This will help your bowel absorb back more water naturally, thus resolving the diarrhea. You also lose calcium when you have diarrhea.
You may need to take a good look at your diet and alter this. Cut out coffee, as this is very bad for your stomach. Symptoms can also be related to food allergies.
Lastly, are you under a lot of stress at present? IBS is linked to stress and when your stress levels go up, your brain releases certain chemicals that affect your gut function, thus causing your stomach pains and diarrhea, so you need to try and find some method of relaxation to reduce your stress levels, be this Yoga or some other form of exercise that suits you.
Hope some of this will be helpful to you?