I have just found out that my wife is pregnant with our third baby. But we are not financially ready (both earn) to have another child. I am extremely anxious. What should I do?

i would suggest that please talk to her immediately. i understand your point completely, and i can understand the other point too, in case she thinks differently from what you are suggesting. since you have just found out about the pregnancy, i am assuming your wife is not too advanced in her pregnancy. you should immediately speak to her and share your concerns, as they are a practical point to think about. also, talk to her about discussing this with the gynae and see what your wife says about it.