My dentist warned me about IVF and miscarriage

I informed my dentist that I was doing

IVF

. When we talked a little about it he proceeded to tell me about how miscarriage can happen and it can take a few times before it works. I told him that the doctor had high hopes because we there for male factor infertility and my RE had said everything with me looked good. Plus I added in we would be doing genetic testing to ensure a healthy embryo. Then he said that’s not a 100 percent and a miscarriage can still happen which is God’s will. He then told me his friends wife took three cycles before she had a viable pregnancy. This was two days before my trigger shot. I have to go back for a filling on Tuesday and I’m nervous to go because I don’t want to talk anymore about it. My husband is upset and want to go down there and talk to him. Should I find another dentist??