First time on here initiall screening assessment tomorrow for aspergers

I am a 40 year old and and am feeling rather nervous but I need to put my self out there. I have asked for an assessment for aspergers. My son was diagnosed one year ago and I have listened to key speakers in various groups and I felt my situations I have been in were being described. I have been trying to justify my reasons that I would be suitable for an assessment and I have been invited for a first appointment initial screening to make a decision to have a full assessment. My appointment is tomorrow.