My son ate slime. Help!!

Hi ladies hopefully someone can give me some answers before heading to the emergency room. My son accidentally ate some homemade slime that one of my older kids left out. We had guests at our home and my son was sleeping in my room, I left the door open Incase he would wake up I can hear. Sure enough I heard him talking giberrish and I knew he was up so I head to my room to try to put him back to bed and when I get to the hallway I see my son with slime all over his face and clothes. My oldest tried making homemade slime with glue and detergent and it was too liquidy and left it out in the hallway and my son who is 13 months go it. I rush to get him and take him to the bathroom to rinse out as much as possible and called poison control. I explained to the what happened and gave them all the info I knew. Now I’m not entirely sure if he swallowed any. He didn’t gag or anything. They told me not to worry about and to give him some milk and he should be fine. Buut.... me , being a paranoid parent, I have not been able to sleep just looking at my child while he sleeps to make sure he’s acting normal. He is not vomiting or crying or anything , he is being his normal self and sleeping soundly. My husband says he looks fine and I’m being paranoid. Anyway I’m about to head out to the hospital but would like some input before heading that way. Do you guys think he is fine? Should I still take him? Or just wait it out unless I see any symptoms?? Tia