Liver Flushing will help, but it may take a series of 6 or more to see any real difference. Don't get discouraged as flushes are easy and can be done every 2 weeks. Try not to rush and do them any closer together as the 'stones' won't have as much chance to be moved forward for removal and your system needs time to recover balance from the flush.
Also, definitely check into bowel cleansing! Lots of people with thyroid problems have found solutions by a combination of improving their diet (removing chemical additives of all kinds is THE biggie,) liver flushing, and bowel cleansing.