Hi, This bump could be a mucocele (more common on lower lip but can occur any where in mouth) which is
transparent swelling due to obstruction/rupture of minor salivary glands. It may heal upon itself or rupture
spontaneously to heal. Other possibilities could be fibroma (usually pink and hard to touch),granuloma (nearer
to gums) and rarely any malignancy but to reach to diagnosis you need to get yourself examined by a dentist or
physician. Hope this helps.