Thanks Sam, (Thanks Lara and Dave, too)

I am happy to be of help.

Your pediatrician may have a recommendation on a therapist or they may not. Probably the first step is a follow up appointment to apprise them of your testing results and your desire to move forward with treatment. You can ask then if they know anyone. If they recommend medication as well, I would be sure this is something they are really comfortable with skillwise. Prescribing psychiatric meds is something of an art and is sometimes best left to specialists instead of general practitioners. Side effect profiles and withdrawal syndromes are sometimes different for your age. Personally, I would lean towards trying therapy alone for a while unless suicidal thoughts are overwhelming. Of course we all want you to be safe. If you are stuck in distress sometimes meds are helpful in enabling the therapy to do its work. You, your parents and doctor can look at all your options and decide what is best for YOU.

Choose a therapist with experience working with adolescents who is able to establish a rapport with people your age. Rapport is very important and you will progress faster with someone you feel "gets" you. Experience with Cognitive Behavioral Therapy is a plus but Several modalities may be helpful for you. Having a therapist with a decent toolbox and your motivation to get better is going make a difference.

I worked with a therapist after my nerve injury and found her here...
https://therapists.psychologytoday.com/rms/

I went from her treatment interests and specialties, we emailed a little and I went for an initial appointment and it was a good fit. Sometimes your insurance company will have a list if you don't find anyone. My therapist was an LCSW but someone with credentials of LPC, LCSW or LMFT will have the training and certification to work with you.

I am so glad to see your motivation and desire for help. This is an excellent starting point. People have an amazing capacity to change. Their motivation level is many times a huge part of their success in bringing change about. You are a special young man Sam and you have grit. I know you will undertake the work with commitment.

Stick with the healthy dietary changes you have made. I cannot advise on avoiding stimulant (media, caffeine?). Moderation in everything is always wise.

Keep being courageous and moving forward, you are stronger than you know.