###Human: Is it possible that sex after cocaine consumption will affect baby? ###Assistant: Hello. The one-time cocaine use will not affect the present pregnancy as the lot of sperms which fertilized the ovum was manufactured three months back, when you were not exposed to cocaine, so unlikely that the present would have undergone any morphological or DNA changes. Nevertheless, medical follow up with NT scan, triple and quadruple marker tests and level 2 anomaly scan would be imperative during the course of pregnancy.