when probing its always a good idea to use a lubricant like vaseline or ky. this will help if the animal moves or curls it will slide out. if they start to move let go of the probe. i personally never probe hatchlings as they are super easy to pop. probing is not something you want to do is you are not possitive on how to do it. it doesnt sound like you did too much damage. they should be fine.