How to avoid biochemical pregnancy? Biochemical pregnancy is not an ectopic pregnancy, right?

Patient's question:

No

Doctor's answer:

Biochemical pregnancy means that sperm and egg have combined. Generally, seven days after the combination, human chorionic gonadotropin (hCG) is secreted. Seven days later, we can detect it with a pregnancy test. Often, the sperm and egg combine and secrete hCG, but they must form a zygote and return to the uterus for implantation. Biochemical pregnancy is when the combination occurs, but it does not return to the uterus for implantation, or it returns but fails to implant. This is called a biochemical pregnancy.