To get pregnant, old is not criterion and health of husband and wife and their close affectionate relationship is enough. Even at the age of 50 few ladies gave birth and hence 36 years of age is not too old.
I'm a 40 year old male and I don't think so. As long as youre in good health and you're willing, there shouldn't be a problem. Your older children might have a problem getting adjusted as well as a significant other. However, they'll get accustomed after while. My daughter was conceived when I was 35 and as much work it has been, she has brought more happiness into my life now than when I was younger. I hope it works this way for you too. Good luck
No, 36 is not too old. However, I would encourage you to talk with your ob/gyn doctor or nurse practitioner to discuss pregnancy risks, since the risk for down syndrome rises with increasing age. Good Luck and God Bless...Karen RN