<s>[INST] Hello I have been getting a clear lump forming on the top of my mouth just behind my jaw line. It s non painful but anoying, I scratched it and it popped with bloody discharge . It was gone a few days then reapeared.. also there seems to be a harder lump in the same area about the size of a bean split in half but more deep under the tissue of my skin. [/INST] Hello and welcome, Lumps seen in the oral cavity can be of various types. They can be infective lesions related to tooth like periodontal abscess or gingival abscess Chat Doctor.  Lumps are also formed due to being or malignant swellings of the jaws.  Cysts of the jaws, related to tooth or bone may also lead to swelling. Parotitis or parotid gland swelling may also form lump behind the upper jaw line.  Exact diagnosis can be made only after clinical examination and evaluation by taking radiographs. I would suggest you to get and OPG radiograph done which will help in diagnosis and accordingly treatment can be planned.consult an oral surgeon and get the examination done. I hope this helps, take care. </s>