S.
I wish I had the answer I am also going through it with my son, also 15 months. I tried going to church a few wks ago and took him to the nursery but minutes later I had to come back to get him cause he wouldn't stop wailing and threw up. I felt so bad he has had a severe case of acid reflux for over a year so he gags and throws up pretty easily, I myself want him to interact with other kids his age and want to put him in a MDO program.
My son even wakes up in the middle of the night wanting me and freaks out if I don't bring him to my bed.
Good Luck!