I have a broken foot and using cam walker w crutches not bearing weight. Going on week 6 and my foot is still sore and bruised. Boot somewhat heavy?

Keep wearing boot. Keep wearing the boot. Sometimes a break in the foot, depending on the bone, can take up to 3 to 6 months to heal. If you continue to have pain and swelling you may need another x-ray and possibly an mri. Sometimes trauma to the soft tissue can cause continued swelling which can be helped with a cortizone (hydrocortisone) injection, icing, or anti-inflammatories.
Have it evaluated. Pain may last a long time following a foot or ankle injury. An x-ray can be used to monitor the healing have it re-evaluated by a professional and get the appropriate treatment.