do you think I was nervous at ordering or didn't know what to order?!

Today I went to dunkin donuts and for some reason I can focus when I look at the menu I don't know if it is my disabilities learning or that I'm blind but I just can't seem to order what I want.I have anxiety and Depression and I don't drink coffee cause it will get me nervous or I may panic I went there with the intention of buying a donuts in there and I ask the guy what kind of juice he has so that he could help me out I didn't want coffee but is like he didn't even know what kind of juice they had.So I just brought a donuts and took it all the way home at the cold but I was keeping my head up and told myself that I learn from mistakes but I don't know I think I'm saying that as an excuse what do you think that had happen to me do you think that I was nervous or that I did know what to order? I sometimes I want to order what I want and I don't most of the time and as soon I get in the store they already asking me what I want to order and I also take too long at the menu that I feel that people start looking at me and that end up not ordering what I want.That's why I just buy pizza almost everyday.