I am having almost similar trouble, I have expelled some 100 round worms all live and how many dead I don't, problem persists, but no pain, I feel one route is blocked, I think problem might have started some 10 years back, I was not expelling stool. Due to my extreme busy schedule I did't take it seriously and that have increased the quantity of round worms. 4 years back I took it seriously went to some top doctors they prescribed stool tests which always showed negative for any larvae, but I was expelling round worms of 9 inches. Doctors have no answer they were prescribing only Albendozol, I must have taken some 125 tablets by now. I am taking laxatives for keeping myself little comfortable level to go for my work. I am dejected to say that my intestinal blockade will not be alright.