what is right as a parent..

I had an awkward situation the past couple of weeks or so. Things have been rough around here and when aren't they. It's life and things happen. Since my son started school, I have been feeling a tad bit sad , and depressed. The fact that he's gone for so long really Carry's with  me through the day. I have a hard time of letting go an all. But , it's simply thee idea  of what is right. The first day of school was a huge struggle. the second day was different . When I went over to pick Haven up , the teacher had opened the door and my son tried immediately to run out, the teacher grabbed him and said no , you need to wait ok. My son broke into tears in front of all the parents waiting. This really broke my heart. I mean I couldn't believe that he was so sad . Then after eventually  going and picking him up , I asked the teacher how was he through the day , her response "OK", she then just looked away and proceeded with the other parents.  In a way it made me uncomfortable. I ask , my son what was wrong, " mommy i missed you. Wow, I can only imagine what the feels like . The second day when I am about to drop him off, he says mom come with me . I tell him I can't and that he is brave ,that I'll be back to get him.

Ok mom. He walks off on his on own, slowly with his head down. This whole time I am wondering if this is the right way  to detach from my child . Being with him 24-7 and never leaving him with anyone and then suddenly i just do. How can I know this is right . Is he going to resent me. Will this loneliness create some kind of empty hole in his heart. I always try my best to keep telling him how much I love him , and how much he means to me................... and all this is making me feel like I could do more. I am yet to find out what else I could do to make him feel safe .. With his constant  crying when I pick him up, I am wondering if what  I am doing is right. With the need to get back to work, this is dawning on me.