Hello, I've had experiences like this. They can be very frightening, I know. The last time I had to go hide in the bathroom of the store for about an hour, I think it was. I don't think you're psychotic, to me it sounds like a type of flashback where the past and present collide, with the emotions of the past feeling so real. If it were me, I would try to ground the feelings about the child in the store. I tend to pray for kids I see that I worry about, and then I make a card to "send" to my child within because I've really just been projecting that. I actually put them in blank envelopes in mailboxes. Not sure where they end up, but it's my way of communicating with my past. Not sure if this helps you at all, but I hope so.

Be well,

mtd