The second day after fertilization, you will not have any body aches and most people do not have any symptoms. On the second day of fertilization, the fertilized egg has just been formed and has not gone through the process of implantation and secretion of HCG, so there will not be any serious discomfort, and you will generally not be achy and weak. After fertilization, with the rise of blood HCG, there will be early pregnancy reaction in 4 weeks of pregnancy, which may make the body sore and tired, this is a normal physiological reaction, generally no special treatment, appropriate rest can be. Early pregnancy reaction, in addition to body aches and weakness, there will be other symptoms such as breast enlargement and softening, accompanied by a slight tingling sensation, some prone to nausea and vomiting and other symptoms of early pregnancy, and a few women will have the phenomenon of bleeding at the time of implantation. The symptoms of pregnancy vary from woman to woman, so don’t worry too much and go to the hospital for checkup.