Can one have implantation bleeding 19 days after conception?

It is not possible to experience implantation bleeding 19 days after conception, as implantation usually occurs 10 to 14 days after fertilization or egg retrieval in the case of in vitro fertilization (IVF). Implantation bleeding is light spotting or bleeding that happens when the fertilized egg implants into the lining of the uterus. It is a sign of early pregnancy and typically occurs about a week before a person would expect their menstrual period to begin.