Yes, yes and yes. Toxins are being stirred up and are most likely the root cause of the pain in the first place.
But no - they are most likely not living in your back.
Roundworms hatch out in the lungs. You might want to look at HUMAWORM (www.humaworm.com) as it will clean the entire body (including the lungs)at the same time during the 30 days parasite cleanse.
The Hu-Mana-Tea would also be good for binding to and removing toxins.