Probably over thinking

I've been on the pill for 6 months we've decided to ttc I'm finally ovulating and he pulls out. Seriously! I've been wanting to be a mom for 4yrs now and finally the timing is right financially and medically and he pulls out. I know this is between my husband and i but i just can't get it out of my head. I don't even know how to start a conversation with him about this.