Answer:
Tim and his wife are trying to have babies
Step-by-step explanation:
The hCG or the Human chorionic gonadotropin is the name of a hormone that is for the maternal recognition of pregnancy and is produced by the trophoblast cells which surrounds a growing embryo, and it eventually forms placenta after implantation.
Luteinizing hormone is also known as gonadotropin. This hormones is an important sex hormones for both men and women.
In the context, the doctor advised Tim to take a medical course of hCG that is having the similar effects like the luteinizing hormones as Tim and his wife is planning for babies.