I am a mother of two children (12 and 15 years old). An unplanned preg…

I am a mother of two children (12 and 15 years old). An unplanned pregnancy has occurred, at 6 weeks gestation. We are both over 40 (I am 37, he is 39). Financial possibilities and health allow us to have a third child, but I am very afraid and doubtful. Our neighbors had an incident, an eight-year-old girl lost both parents in six months (she had a 22 year age difference with her older brother). It was so sad for her, I fear our future child might be in such a situation. To give birth or not?