Aw, big hugs from me and I wish you all the best. My oldest daughter is 11 years older than my youngest daughter, so very close to your children. Some of my children were big surprises too and I remember laying there on my bed with the pregnancy stick in my hand thinking all the thoughts that are probably going through your head right now. I can tell you one thing though, every one of my children are special gifts that I treasure and I'm blessed to have all of them. Whatever you decide to do (and you do have options you can consider) I wish you all the happiness in the world.