@georgiagurl I concur with @wesleym. Starting treatment is a decision best weighed using all the diagnostic information and hearing about the merits of treatment as well as watchful waiting.
I find waiting for test results nearly intolerable so hugs. I’m so glad you are getting a second opinion as you really have not yet received a first from your actual physician.
Deferring to a nurse practitioner for such a weighty discussion may be simply convenience, but that would not sit well with me (even though my nurse practitioner has a MUCH better bedside manner than my Hem/onc doc. 😉).
Do advocate for yourself and get the information you require in order to make this weighty decision.
Will you let me know how this goes for you?