Hello there Vicki @Victj, welcome to the forum. I’m so sorry to read of your son’s diagnosis, that sounds like a lot of stressful change for you both in quick succession.
I see dear @DuncanB has shared his invaluable advice and I’d agree that having visitors when you’re in hospital feels really supportive, even if we can’t show it. As a former young man I know it was sometimes hard to show loved ones how I felt, certainly at difficult times.
I wonder if you might like some properly researched information about anaplastic large cell lymphoma (‘ALCL’) for reference, there’s this from Macmillan: Anaplastic large cell lymphoma (non-Hodgkin lymphoma) | Macmillan Cancer Support
This is the great Blood Cancer UK information about T-cell lymphoma which I believe ALCL is a type of: T-cell lymphoma | Blood Cancer UK
As @DuncanB says, always let your son’s specialists guide you, they can explain where he’s at in his treatment and how he’s doing.
There are forum members who have shared about their transplants which can be found using the search box at the top and key terms like ‘transplant’.
Here’s one thread about stem cell transplants that you might like to dip into to see how others are doing: Awaiting or considering or had a stem cell transplant, a place to share here
And I wonder if you have a Maggie’s near you, they’re great to pop into for a chat and further resources: https://www.maggies.org
If you have any medical queries you can call the lovely Blood Cancer UK specialist nurses free on 0808 2080 888.
Hope that helps a little @Victj, do please let us know how you and your son get on.