I’m going to end up pregnant now because of this

So i am a huge animal lover and I’m also a veterinary surgical technician. Well the other day a Hungarian puli breeder came into my work to have all of her dogs puppies evaluated before she put them up for sale.... and somehow I asked for one and she let me have pick of the litter FOR FREE. My husband and I on the other hand have been trying to get pregnant for 3 years now and we have only succeeded once and that ended in a miscarriage. We already have two dogs. One of which just turned a year old... NOW WE HAVE 3! I told my husband I don’t want to have any children for a few years now because I want my girls(my dogs) to be over the age of 3 so I can have all the kinks worked out with them before a baby arrives. So basically what I’m saying is I’m going to get pregnant now that I’m not trying. If it happens we will be able to handle it but ideally I’d like to wait. Has this happened to anyone 😂