Remember the hormones in your bodies are all out of wack sometimes when you are overweight. Also it is important to not get pregnant for at least 18 months post op. I am a labor and delivery RN and it is not good to have a baby right away . You can I work with a girl who had bypass and is on her 2nd child after losing 150 lbs. she now has a 20 year old 2and the one due next month! Same husband too had first at 18.