Hey Hun as hard as it may be it may be time to step back and take a deep breath.
If your DS's daycare has taken the time to write a letter for the psych then even if they get a chunk of it wrong, the fact they tried is a good sign. Daycare can only comment on what they see. It's your job to then tell the psych what you see. If there are differences it doesn't necessarily mean one party is bad. It could just mean your DS acts differently depending on the environment he's in. Let the psych merge the two stories together - with qualifications and years of study I am sure they can get to the bottom of what's going on.
Please don't shut out your DS's educators because of what is written in the letter. They spend a chunk of time with your DS and they might have a piece of the jigsaw puzzle your DS's psych needs.
I would treat the tripping over as a separate issue.
Even if there are some things with your DS that need a bit if extra love and attention with it's not a bad thing. It doesn't mean your DS is any less gorgeous or Loveable. It doesn't mean you've failed.
Please let all input through to the psych with an open mind. The more data the better.
Hang in there xx