Feeling lonely

Since I was diagnosed with Autism, I've been feeling lost, lonely, scared and unsure of things. Is this normal? Or am I just weird?  I've had a traumatic past so I also have PTSD, anxiety , depression and sleep + appetite problems. I'm on medication for my anxiety and depression.

I can concentrate on things but I just don't feel how I did before my diagnosis. I hope once I know where I am on the spectrum things will settle down and I can move on in a way I am comfortable with.