Struggling to Eat: Is it Linked to Autism?

TL;DR: I've always had difficulty eating and I'm wondering if this is linked to autism or something more serious as well as how I can try to eat more So I've been having difficulty eating for as long as I can remember and now that I'm diagnosed with autism I'm wondering if that's part of it or if it's something else entirely. I find it difficult to eat a full meal most of the time; it's like my brain is telling me I'm full but I can feel in my stomach that I'm not. It becomes physically difficult to swallow and I've found that there's no avoiding it but I can sometimes delay the reaction I guess? (or sometimes I just get lucky and it doesn't happen). If I follow specific guidelines I feel it's more likely that I finish a meal. My parents never considered me a picky eater because I'd eat anything but I'm starting to wonder if maybe I'm just picky in a different way. And my OCD does have some influence over my eating but I don't think it's relevant to these specific traits. So I guess what I'm asking is should I be concerned about these traits and does anybody know how to overcome them?