I have struggled w/eating for 4 yrs,from not eating for periods of time to purging the food i did eat. with that, i started forcing myself to poop, sometimes through force of hand. now i cannot poop on my own, as nothing digests anymore. what do i do?

Your eating disorder is obviously a mixture if bulemia and anorexia. I recommend consulting a mental health professional with a specialty of eating disorders. To regulate bowel function you must drink lots of fluids,eat fiber or take fiber supplements & get regular exercise. If you have little or no urge for BMs, try taking a daily bowel stimulate like SenokotS according to instructions.