Update:
Hello everyone,
My ultrasound did not reveal the cause of my lump or anything out of the ordinary, which was a relief. However, during my recheck with ENT the day after the ultrasound, the doctor noted that it had in fact gotten larger. Then, 2 days later, I came down with painful lymph nodes from my chin to my under arm on the same side as the lump with no discernible cause or infection (Covid test was also negative). They have not responded to antibiotics yet though it is still the first week of taking it. So, to sum it all up, an MRI has now been ordered and I'm right back to where I started. I personally think the lymph nodes are just a crazy coincidence and my doctor reassured me that the MRI would have been done regardless since the lump grew bigger.