Finding Answers

After months of researching and questioning myself I finally decided to phone and try to arrange a GP appointment to get an assessment for autism. I'm a 20 year old student in my final year at university. For around the past year I've been struggling with depression and I've had anxiety in some form for as long as I can remember. I was told that I couldn't be on the autistic spectrum because I'm at university and I wouldn't be where I was if I was autistic. I don't really understand this and it has made me feel even worse and even more confused. I've been seeing a counceller for my mental health problems and want to bring it up with him but I feel as though I would be wasting his time. I feel lost at the moment and it is seriously affecting my uni work and my relationships with family and friends, who are distancing themselves fro me when I try to talk about the traits of autism I experience. Any help in understanding and coping better would be really apprreciated. I haven't told anyone else I think I am autistic. Should I? Am I just making this up in my head? Do I keep trying to get a diagnosis?