Questioning if my ADHD is actually autism

So would I. Both of those are treated so differently. Having a therapist or a psychiatrist do an evaluation will be best

Knowing the proper term for what you're going through can be really helpful and make you feel less stressed and confused. Treating one condition like another can be really stressful for a person and causes a lot of issues over time. If you feel like you might have another condition, I'd recommend looking into it :)