Anxiety plz help me figure this out I need reassurance

I was diagnosed with anxiety disorder and depression. I have anxiety attacks and I use to self harm but I don’t anymore. Iv delt with anxiety for a long time and Iv learned how to cope. I’m 16 now but my anxiety gets the best of me sometimes. This covid has me so stressed it literally hurts to eat and I have no appetite. Iv had ulcers in the past and I think that may be what it is but I didn’t eat for 2 days but I ate today. It still hurts to eat tho. Could I be developing an eating disorder or am I just overthinking?