for many autistic individuals even recognizing their emotions is difficult. Since you have grown up, do you find it easier to find and express your emotions ?
Learning healthy ways to deal with our emotions is often not learned in family situations. Learning how to express emotions or "what to do with them" can take a while but may be helped by therapy or counseling. There are many good articles all over the internet dealing with emotional "how to" stuff.
I did not begin to recognize my emotions at all until after the age of 30. I was able to learn to express emotions in healthy ways once I began to recognize them. It can take time.
Its OK to feel emotions, something I learned in therapy.
Until I was fully adult I was punished for showing any emotions such as anger, frustration, disappointment, envy, resentment, etc. It all came out as tears. When I cried I was punished for that too. No wonder I was constantly in distress.
Each person's experiences will be different.
Some things you might want to explore would be "emotion wheels" which show in graph form how emotions are related to each other and help define the specific feelings we may be having at any time.
Cheering you on, do your best self care. Its OK to feel emotions, they are signals to yourself that you can learn to interpret and see how it might apply to any situation where strong emotions show themselves.
Learn all you can and get a good coach if you continue to struggle with "what to do" with your strong emotions. There are many techniques that can be learned to help yourself deal with any sort of emotional overwhelm and to understand their meaning. Its a lot to sort. Hang in there!