Please help! Son ate 3/4+ of a turkey sandwich that had rotten meat

Please help! Son ate 3/4+ of a turkey sandwich that had rotten meat and didn’t notice it was bad until that point, which he came and spit it out immediately. What & when do I expect next? Sad mom. I don’t want him to feel bad or get sick.
I’ve got him a double bagged bucket next to him & the bathroom all set up with toilet lid up, bottled water, wet wash cloth, paper towels & toothbrush with toothpaste. Can’t tell I love him and don’t want him to go through this... I hate this!

What do you mean "rotten meat"? Was it just expired or was it green? There is a difference.

Honestly, you would know by now and I am so sorry no one responded to you! 11 hrs and he would have been sick from deli meat.

Please respond back. I am a mom and I totally get it.

That must have been scary. I wonder how old he is though. If he's a teenager, it probably wouldn't phase him. Also, what does "rotten" mean?
Let us know how he did.