The phenomenon of regurgitation is likely to be a symptom of successful implantation. Because after the fertilized egg is laid, the trophoblast cells begin to secrete blood HCG, and for the more sensitive people, once there is blood HCG secretion in the body, nausea will occur, so regurgitation is likely to be a symptom of successful implantation. However, if the regurgitation is more serious, you must go to the hospital to do the appropriate examination, because under normal circumstances, the vast majority of people will not experience nausea and vomiting until about half a month or so after the fertilized egg has implanted. If regurgitation occurs too early, be sure to rule out the possibility of gastrointestinal disorders. If regurgitation occurs early, trophoblastic tumors should also be ruled out.