Don't panic. I felt the same at the beginning. But which meds besides albendazole did you try?
Did you try ICU's fluke and Tapeworm protocols? Did you try meds for roundworms (like mebendazole)?
If concentration and duration of treatment don't help you - you should enlarge the dosage and duration. I highly recommend praziquantel, mebendazole and niclosamide. You probably have coinfection and you'll kill one parasite after another. They aren't toxic, prazi is effective against flukes, niclo - against Tapeworms and mebendazole - against roundworms.
If you want I can tell you concentration and duration of treatement which helped me. Any suggestions what kind of parasites do you have?