I need to go!!!! how can i ?!

I need to go!!!! how can i ?

I have always watched what i ate as a teen i weighed 160 and am almost 6' i gained 80 pounds and now have lost 30 i go up and down in weight and can not maintain. I am working out and have been put on a restricted diet of 4 proteins 3 veggies 2 starches and 3 fruits. And i am working out up to 6 hours a week. but i go off my diet and i gain 5 pounds in a week. i stay on and i loose 1 or 2. Also with thge restricted calories and food i can only intake a certain amount of fiber. And sometimes it will be 4-5 days until i have a bowel movement. I have researched it and i am doing everything- eating high fiber breads eating 1 tablespoon of "good fat" veggies- i have even tried laxatives-- NOTHING WORKS! It is very annoying to be worrying about it constantly. The only way i have ever lost a good amount of weight before is not eating. I am trying to avoid this. But this diet is so slow! and screwing my digestive system up. Any thoughts?

How much water are you drinking? If you're not drinking enough water, it will stop up the works....

Otherwise, speak to your doctor about what else to do, because you can't be miserable and uncomfortable all the time.