Thanks everyone for the replies and help. I'm uncertain on his exact age... he is a baby though. I also thought it strange he would regurge that long after feeding. The pinky was smaller than he usually is fed but looked fine. When we found the regurged pink it was soft and pliable, smaller than when he ate it, like it had been squished or shrunk but not decomposing, stIll plump...if that all makes sense. We've had him 7 weeks now and he has been a very reliable eater. Never had a problem. I log everything that goes on wIth my snakes...when/what my snakes eat, how they act and when they shed etc. Like keeping a baby book. This will be his second shed with us. I will definitely wait until after he sheds to feed again.
I only handle my snakes after they digest and eliminate and are active again. I had no idea until after that he had been handled.
Elrojo...thanks for the lInk. It will be so be worth having and be put to good use. I have 3 snakes and future plans for more...IF I don't fail miserably with the ones I have . I have ordered the IR thermometer and double checking the temps with a mercury thermometer right now. Thanks again everyone.