Yes, it is definitely safe to have a baby after undergoing bariatric surgery. In fact, having bariatric surgery and weight loss can improve the outcomes for pregnancy. However, it's best to wait at least one year after the bariatric surgery before you get pregnant. This makes sure that you don't have any complications from the surgery and that you've achieved your optimal weight loss. In addition, the nutritional requirements for a woman who has had bariatric surgery is going to be different and it's very important that you have a well-balanced nutritional status prior to getting pregnant.