Discussions

Ok so my 10 (11 in 2 weeks) year old got home today from being with his Dad in Alberta for 5 weeks. And I know that he's feeling emotional because he already misses his Dad... doesn't really get to see him much throughout the year but he's going through these spells that actually started about a year ago or so...  
 
He gets very emotional... I try to talk to him and have tried to be there for him to tell me whats bothering him but he says he doesn't really know what it is. He just gets upset and cries (usually at bed time.... especially on Sunday nights during the school year) and can't really tell me why he's so upset.  
 
I worry so much that he's depressed, yet he seems to be quite happy and well adjusted most of the time. I feel awful about splitting with his Dad but its been about 7 years now and when he was younger he seemed to be o.k.  
It occured to me tonight that it might be related to the start of puberty etc... but I wanted to hear from others who may have some input into this...  
 
Is it normal?? And how the heck do you tell if it's not??  
 
HELP lol