Welcome to JustAnswer, and thank you for putting your trust in me!
Without being able to personally examine you, I am limited to speculation, and I offer my response in that spirit.
The fact that you perceive the swelling to be more prominent after eating suggests that you may have some blockage of one of the sublingual or submaxillary salivary ducts. Blockage may be due to the presence of a stone in the duct, or due to ductal atresia or stenosis. However, it is uncertain whether your observations are accurate as to the variability in the size of the swelling; the assessment of the morphology and consistency of the soft tissues of the mouth requires that it be done under consistent conditions. In other words, there is the possibility that your observation reflects a normal anatomic structure rather than a pathological finding, and a reliable assessment in order to conclusively identify your swelling should be done by either an oral surgeon or an otolaryngologist.
The swelling on the outer aspect of your face under your jaw would likely represent an inflamed lymph node, and this could be the result of almost anything, from a recent head cold to a dental
or sinus infection
. Again, this is usually innocent, but may merit professional assessment when during the periods when it is manifest.
Mandibular tori are a completely different issue, and are easily identified as hard, fixed swellings on the inward-facing aspects of the lower jaw bone, usually in the premolar
region. These are of no significance, unless they are of sufficient size to impair chewing or speaking.
Hope this helps...