Anxiety or Autism

I’m super awkward, have social anxiety, my voice is monotone and emotionless, and I cant laugh, I’m super uptight. Could I be autistic??? I’m so unsure. I don’t think I am but then why do I have these things about me that are really strange, and I don’t see anyone else having them??? Like I have never met someone who has a hard time laughing??? Or showing emotion through their voice? It’s just so weird to me. Could it just be anxiety???