I have a small swelling under my right jaw. Please help.

Hi doctor,

Before ten days, I was taking some soup. When some of the soup went under my tongue, I got some sudden sour taste on my right side of my mouth and jaw. It got subsided in intensity and I examined my mouth inside for tender areas or asymmetries under my tongue. After that, I noticed a swelling in my submandibular duct on the right side. But I do not had any tenderness. On that night, I was eating some chips. After that, I noticed some discomfort in my right jaw with earache and pain while swallowing. I felt it in my throat too and I also noticed a golf-ball-sized swelling under my right jaw. After getting some advice from my father, I used some warm salt water rinses and external warm compresses. Within a short time, swelling got reduced. On repeated rinses, it got reduced minimally. Still, I had a palpable asymmetry on both sides of my jaw. Last night, I had some discomfort in that area and realized that it is getting swelled again. I am using salt rinses and compresses repeatedly. My swelling remains enlarged and it seems to be fluctuating in size. Sometimes, I have a referred pain in my ears. My submandibular duct seem to be swollen slightly. But after noticing a small white spot at the head of the duct, it got disappeared after using salt rinses. I think that this may be a small salivary stone. I do not have any fever or sour taste in my mouth or any other symptoms in my salivary gland. Before ten days, I recall that after eating a hard food, I got a cut in my gums through miscalculated bites and so it may have traumatized the duct. My symptoms got reduced after doing repeated saltwater gargles and warm compresses. I need medical advice on whether I am doing the right one.