Your mom may have a point about meds and your age. And I'd personally be leary of self diagnostics off the internet.

How are things with school behavior, grades, etc? Are there things where the school could run some testing for?

Anger and outbursts can be typical teenage things or there are things that would seem one thing on the surface such as bpd or bipolar that overlap other conditions. There is a gamut.

Neuro psych evals are time consuming to get consults for then insurance approval then the actual testing day then waiting around for results. And even with results the doctors themselves could take time to consult and decide on whether meds are truly needed.

It might be more practical to take steps to work on self esteem and adjust nutrition and sleep and exercise schedules.

My 15yo has social anxiety, some milder form of adhd(which explains the tantrums of the past-affects part of executive function of memory) and adjustment disorder. In the process of a consult regarding meds for anxiety and nothing else. If anything he had begun taking melatonin voluntarily months ago to adjust his sleeping and willingly takes a multivitamin that has Omega 3s. And I honestly see a difference.