DS is nearly 12 months. We are having his settling in sessions at his (by all accounts, very lovely) creche this week. I'm back to work on Monday (will be working 3 days a week).
First session yesterday was 1.5 hours. They suggested I leave straight away/sneak out, which I did. When I came back they said he hadn't cried at all, had eaten lunch, been very good. He was sitting in at a table playing but he did look a bit sad/forlorn. Totally fine and happy once we left.
Today the session was 3 hours. I dropped him off at 9am and he was a bit tired (they only do 1 nap a day in the wobbler room - whereas he would normally be having his first nap at about 9am). One of the girls took him off me again and suggested I sneak away, which I did.
When I came back at 12pm I could hear him crying hysterically when they answered the intercom. I could hear him as soon as I entered the building. Went into the room and he was absolutely distraught, I've never seen him so upset. 
Really really redfaced, tears streaming down his face, he was retching he was so distraught. The staff looked concerned and said he had been "a bit" upset. After I left he started crying, then about an hour later he fell asleep in the arms of one of the workers and had a half hour nap. He then woke up and was a bit better, had some lunch, but then was crying again more and more until I picked him up.
I had forgotten to bring along his favourite stuffed dog 
the past two days but also I wansn't certain whether having it there would make a big difference if I wasn't there????
I feel absolutely awful, awful, awful. Is this normal? AIBU to be panicking?? Is he not suited to creche? How much crying during settling in is too much? What the Actual Fuck am I going to do?