Aw sweetie, it'll get better! I know how you feel and have been there. Everyone just needs time to adjust. Your son needs to have time to get used to having other children in his home. You need time to get used to having this new situation. The daycare children need time to adjust. It takes time to find your stride, but it will happen. I've been doing this for almost 12 years and I promise it will get better....but it takes time. There's ALWAYS a transition period. Reasoning with a 2 yr old can be tough. You did absolutely the right thing and handled it appropriately. I will say this - be FIRM! Don't ever waver on your decisions, boundaries or discipline. That, for me anyway, has been absolutely key. Once you start to waver, it's like a snowball effect and before you know it, you're just putting out fires constantly. And your son will adjust to the new scenario as well. He's going to have little friends to play with once he's old enough to grasp that concept. It's all just so new now.
One thing I've done with new children is to find something to bond over. For my last little guy (15 mos at the time of enrollment) it ended up being something as silly as a banana smoothie my daughter brought home for me. This child cried, cried, cried every day. Then one day, my daughter gave me a smoothie. I noticed him eyeballing it so offered him a sip. That was it. We shared the whole thing and BOOM - bondedSometimes, it's the silliest little things that break the ice, then suddenly it's smooth sailing, and that's a fantastic moment. It's great that your husband is coming to help out. Lucky you! What about asking him to help in the daycare to manage your son in that setting while things smooth over rather than taking him out of the equation? Then you can work toward adjusting everyone, with an extra pair of hands available if things get hairy....just kind of in the background until you need him.