A biochemical pregnancy is a spontaneous abortion in which the sperm and egg have united, but for various reasons do not return to the uterus for implantation or fail to implant. Since the fertilized egg does not implant on the endometrium, the damage to the endometrium is not really significant and therefore does not affect the next menstrual period. Therefore, most women usually have a normal menstrual cycle after a biochemical pregnancy, which lasts about 25-32 days. The birth of a biochemical pregnancy also indicates to some extent that the fertilized egg produced by this insemination is not healthy, so the body automatically eliminates the poorly developed fertilized egg. Most women do not even know that they have a biochemical pregnancy because the symptoms of a biochemical pregnancy are similar to those of a normal menstrual period. There are various causes of biochemical pregnancy, such as uterine factors, low quality fertilized eggs, immune factors and chromosomal abnormalities can also lead to biochemical pregnancy. In women with uterine hypoplasia or severe adhesions in the uterine cavity, the fertilized egg cannot grow on the endometrium, resulting in a biochemical pregnancy. Women who have had a biochemical pregnancy do not need to worry too much, in fact, biochemical pregnancy does not have a great impact on the body and harm, as long as you take care of it, then the next period and future periods will not be affected, and will not lead to the inability to get pregnant in the future, you usually strengthen physical exercise.