ldnindianguy80,
September seems far off with not knowing what the enlarged lymph node is, and concerning enough for your doctor to send you for follow-up. If they can do an ultrasound, they should be able to do a fine needle aspiration biopsy FNAB? This takes 10 minutes in a pathology doctors exam room, and is sent for analysis. I’ve had about 11, and they are pretty accurate.
Good luck with everything