How did it go? I have no advice but my son was also banging his head in tantrums or hitting it. Or from boredom. It's got a lot better recently with more verbal communication and redirecting to clapping and drumming /throwing ball. He needs a lot of rough play and outside time. He doesn't tiptoe or cover ears much (except to experiment) or get overwhelmed on trains Also does pretend play and eye contact and follows instructions and improving speech. Doesn't really hit us. If he does we say no he cries a little bit gets distracted then it's fine Idk if that helps at all
My 18 month old is the exact same he is now on a waiting list to be tested for autism I’m always here for a chat just message me and we can talk about it
I would say it's always a fine line between 'expected' and signs of ASD or something else, getting a professional opinion won't hurt. I will say Ive known many children get frustrated to that level but I've also known children who don't. It's really difficult to differentiate between signs and symptoms and expected behaviour so I think whilst it is likely to be okay it absolutely doesn't hurt to check the behaviour over :)