A.A.
Hi J., I had the same problem with my 2 kids, except mine was the older one, apparently (mine) was having a nightmare and since he could not tell me, his way was to scream. I finally used a night light, I know they should get used to the dark, but I am a mom who's husband works nights and to get some sleep as it is with out hearing noises, it is difficult. I bought him at target an old fashion oil lamp, in the boys decor section, and instead of placing a big bulb I placed a night little one in there the light isn't so bright it distrubs his eyes, but enough to give him peace, I am not super religious, but I did tell him about the angels and that the angels watch him. You'd be suprised at what a one yr. old can understand. show him pics.
well hope it helps and if it continues you might just want to take him to the dr. just to make sure there is nothing wrong with his digestive system.
Good luck
angie