Every mom that I have talked to regardless of the childs age be it newborn or be it fifty the moms always think of their children all the time. Its called
"mother child bond" it never goes away. heck my mom still thinks and worries about me and Im in my 40's. and she does the sa,e for the oldest child she helped raised who is well into his 50's and has a fantastic job with one of the most respected and lucrative businesses where computers are concerned. not a day passes when she does not think about her "children" and we all will always be her children and babies even though most of us have made her a grandmother and greatgrandmother and great great grandmother.

yea sometimes children turn out to be not what their parents expected. My mom sure didn't expect to have a daughter that would grow up to VERY publically expose "family laundry" and have a mental disorder in which her daughter as she calls being DID "believes she's other people" and she sure didn't expect some of her children to get into the drug scene, and one get arrested for kidnapping, and one or more commit siucide and or die of cancer and I sure didn't expect to have a child with schizophrenia living in residential treatment centers due to his aggressive and abusive episodes when his father and I planned his being concieved and birth.

unfortunately parents can't choose their childs likes dislikes temperment and so on and all they can do is the best to their abilities with what they are given and the parenting styles of the times and so on.

Parents always worry about their children thats not being obsessed. to me having an obsession is focusing on something so much that it interferes witht he person talking care of themselves and their daily activites.

from what you have posted your thinking about your son is not interferring with your daily life and care for yourself so you are a 100% normal parent who has bonded with thier child. If you didn't think about and worry about the child you carried for 9 months and raised for years THEN it would be considered there is something wrong psychologially around this issue.

Every time I have a Coomprehensive psychological evaluation the testers spend alot of time trying to determine if I am "bonded" with my child and think about him and care about him because not being able to do those things and express those feelings and thoughts is apart of some mental disorders.

hang in there.