ASD, SPD or just normal behaviour??

[Spookymum]

Hi, I have previously had advice on here a few years ago when I had a few concerns about my dd, you actually convinced me to get further advice and she was fully assessed. She was found to have autistic tendencies but didn't tick enough boxes for a diagnosis.

I now have concerns about my ds but don't know if I'm now being over observant and worrying about nothing because I felt like that after the outcome for dd. Although the things about ds are different to dd.

My ds is nearly 5 and has just started full time school, he is very bright already learning to read and is amazing with numbers.

But a couple of things the school have spoken to me about are firstly his reluctance to write he hates writing, struggles to hold a pencil and his attempts are quite hard to read.
He also gets very excited over things and they find he has trouble calming down to be able to move onto the next activity. We know he is like this and have always thought of him as very enthusiastic!
They have also asked if he has had a hearing test recently as he talks very loud all the time. (We have actually had his hearing checked as we had concerns about his hearing last year but his hearing was normal)

He also cannot keep still, he constantly fidgets sat at the table eating (he has fallen off the chair several times), he has to be on the move all the time but is very clumsy and falls, trips, bumps into things very often. Although he never seems to hurt himself and doesn't like a fuss if he does fall.

I'm really sorry for the long post and appreciate anyone who has read it, so am I just worrying about nothing and he is a typical 5 year old boy or does anyone think there is cause for concern? Thank you to anyone who can offer advice.

Hi PolterGoose thanks for your reply, some great suggestions thank you! I am going to look at your suggested reading, what sensory activities would you suggest?
He does seem to have very bendy fingers which I think is why he can't hold a pencil, his thumb seems to actually bend backwards when he attempts to write. Now you have mentioned other things to try I have realise ds chooses chunky crayons for colouring which must be easier to hold.
School don't seem overly concerned just things they mentioned when discussing his settling in, he doesn't misbehave at school and I think he still listens and does as told he just isn't sat still while doing it. They are constantly encouraging him to write but think the being loud and the excited part they are just going with at the moment.
I'm going to speak to DH tonight I know he won't be wanting to start this process again after going through similar with DD but now I have put it down in writing I feel like I have already taken the first step!

My son has SPd and hyper mobility due to dyspraxia. His ot has given us so much help to settle him down and also build strength. Go to your gp and defiantly ask for physio / ot assessment. Don't worry about the big picture. Think of it like your looking into his hyper mobility and sensory issues. Any thing more will fall out alone the way. Hyper mobile kids can have sensory issues because of the poor feedback but there are so many easy quick things you do put into everyday life to help with this

Thanks PolterGoose and 2boysnamedR you have both been very helpful, its a good way of looking at it to start by dealing with possible hypermobility and take it from there. I have ordered the book recommended and will look at those pencil grips thanks.