AW alert! I dropped off LO at his first day of Parents Day Out today and I've called once so far to check on him and am trying to keep myself until 1pm before I pick him up (pick up time is 3PM)

We are starting him out on one day a week for the Summer and switching to 3 days in the Fall once LO2 arrives. This is the first time he has ever been to any kind of day care program. He's had a nanny 2-3 days a week at our house since he was 6 weeks old to watch him while I work. And in the fall she will stay at home with LO2 and he will be at PDO. I know its a good plan and he'll enjoy it (eventually) but when I left him today he was bawling and screaming "Mama no! Mama no!" I'm trying to keep myself distracted cleaning, working (and now bumping!) so I don't call up there again...

Reassurance and words of advice/wisdom are welcome!!
Re: First day PDO...
Their daycare has cameras and we can log into their app to check on them at any time. I thought I would be on the app all day everyday. It lasted for a couple of weeks. But I became comfortable with the people at the daycare and the care that they were receiving. Eventually, there were days were I would go to pick the kids up and they wouldn't want to leave because they were having so much fun with their teachers and friends. When that starts to happen, I think you might feel better.
And you're right to keep yourself distracted, although I know it's hard the first few days. I won't say don't worry because it's in our nature as moms to worry. Just know that it'll get better and your LO will come to love having the other kids to play with in addition to the change of scenery. Hang in there!!!
DD2 4.2013 - vbac
DS1 9.2016 - vbac, team green
Baby #4 due 9.2018
Good luck transitioning, though. It IS tough!
My mommy guilt stems from him preferring DH over me. It's mainly because DH spent every waking hour with him these past months. Now that I'm home with him 24-7, the tables are slowly turning. Although he still yells for dada when he wakes up ... Sigh...