Hi welcome to HCMForum. your swelling may be of dental origin , carries tooth can lead to such swelling and relieved only after extraction of the teeth. tooth may not show pain.other wise your swelling appears to of chronic origin. it may be tb, if habbituted for tobacco chewing
may be of malignancy. it could of less serius anaerobic infections
. but for confermation biopsy
may be necessory. I advise you to consult a surgeon for diagnosis & treat ment. dont worry you will be fine.