Level 1: How long will it take to react after pregnancy? ——The time point from conception to the onset of symptoms. How long after pregnancy will there be a reaction? This is a question that many expectant mothers are particularly concerned about. Generally speaking, about 6-12 days after conception, the egg will implant in the endometrium. At this time, some early symptoms may appear, such as breast swelling and pain, nausea, vomiting, etc. However, since everyone’s physical condition is different, the specific time points may also be different. 1. From conception to the appearance of early symptoms Approximately after conception