
I tried to answer on your prevous post, but the board was too busy. If your bitch is only 18 months old she is too young yet to be bred from and you should keep her away from the male for at least 3 1/2 weeks, as she should really be at least two years old before having a litter.
The Problems you were having mating them last time were due to inexperience and immaturity, and really I would count myself lucky that nothing came of it.
Keeshonds are a long lived breed, so there is absolutely no hurry to breed from them at too young an age.
Have you had her Hips scored, and submitted to the relevant body for assessment? In the UK this is The British Veterinary Asoociation, which runs the BVA?KC Helth schemes.
If you are in the USA ylu cannot get the hips assessed until the dogs are Two years old (another reason to wait until your bitch is older), and the X-rays are sent of to the Othopaedic Foundation for Animals (OFA). You should also check if there is any Epilepsy in the lines of both your dogs, as it is beleiced to be a hereditary problem in Keeshonds.