I was diagnosed hypothyroid(not Hashimoto)a few months ago because i was feeling tired, had muscular fatigue, etc and also vitamin d deficiency. After taking the recommended dose of levothyroxine I raised my dose because i was feeling any kind of improvement. Then i began experiencing 

Hot cheeks

Diahrrea

No hunger

More muscular fatigue.

And of course, more anxiety.

In fact during those weeks i drank a little cup of coffee and I suffered the worst panic attack in my life. I ask my doctor to stop with the levo and she agreed with that. 2 months after that episode we checked my levels and they were alright(TSH 4.08  0.27-4.2). Also i have to say that i have ADHD and i must take methylphenidate/ritalin (which works wonders for me). But the thing is that I’m terrified of going back to those symptoms even 4 months after the incident(the panic attack) I can’t even take my ritalin because of a hypothetical panic attack or a heart attack. Sometimes i am incredibly scared because i suffer the hot cheeks and I know it could be anxiety related and i know it won’t happen anything if i take ritalin but i am terrified. Could you help me to reassure myself?