The raised thyroid antibodies and lump in your neck show Hashimotos thyroditis.
Hashimotos Thyroditis is auto immune and very common. Lots of us have it.
What were your other thyroid blood results? T4,T3, TSH? I suggest you get a copy of the blood results and get retested.
You need to have tested TT4,FT4,FT3, RT3, TSH, Folate, Ferritin, Vit D and B12 as all can be low with thyroid issues.
Do you have bloating? Gut issues? The lump in your neck?
If so I'd recommend going gluten and casein free (cows milk) it's a big change to start but once you get your head around it and all the alternatives you can pretty much eat as normal.
Gluten and Casein look like the thyroid to the body (molecular mimmickry) so when ingested and they get in to your bloodstream via leaky gut(intestinal permeability) the body sees an invader so sends T cells out to attack but then mistakenly also attacks the thyroid.
In a past post I've listed all the things that I find have helped me, may be worth a look.
Research leaky gut. Chris Kresser is good for this.
Izabella Wentz Hashimotos Protocol book is good she also has a website.
Dr Datis Khazzarian also has brilliant books also a website.
Dr Susan Blum md The Auto Immune Recovery Plan is good for diet info.
FYI B12 should be 600 plus under 500 will start to cause neurological changes.
Vit D around 60 no less
Folate mid range.
Ferritin mid range but no less than 70
Your Dr will say ok at much lower levels as they don't want to supplement people as very costly!