They will give you anesthesia for the procedure and would not expect you to find the waiting room while you are under the influence. Usually they have friends / family in the waiting area and alert them when they can pick you up. They will not leave you alone during the procedure or after and they will make sure you are taken care of.

Sometimes we get things we don't deserve even if we have done all the right things. I actually have a similar lymph node on my collar bone and it's been there maybe 10 years. It's nice they are covering all the bases and making sure you receive the care you need.. But try not to let all the words bother you. I had a bunch of lymph nodes in my body flare up when I was very sick as a teenager and they simply never reduced. I find it strange, but lymph node behavior is erratic at best.

With a procedure such as a biopsy of a lymph node, I highly doubt you will be "out of commission" for long as the lymph node in question is not deep and you will have little to no recovery time (a week or less). You can probably be back to work in 2 days.

Keep us updated if you want!