After eating I feel a burning sensation on soft palate at back, on viewing a fleshy blister like bump appears in the same spot every time, any ideas?

Soft palate. Is this someting that happens after every meal? Is it specific to certain foods? This is something that needs to be examined visually, and requires more information. It may be due to an injury, allergies, local or systemic infection, acid reflux, medications. See your dentist, an oral sugeon, or an ENT specialist.