thank you for your query
I fail to see a possible connection with your neck pain and endometriosis
The neck pain is most probably a neuromuscular cause.
You need to have a complete evaluation with an Orthopedic surgeon for the cause.
It could be torticollis
or a nerve damage
or subclavian rib syndrome.
However, endometriosis is definitely not related to it.
Do continue to have periodic and regular gynecological assessments also, because even after hysterectomy
, particularly at a young age, you can have a recurrence of endometriosis.