What is the reason for the slow growth of follicles?

Patient's question:

The follicle grows slowly. What's the reason? Why can't I get pregnant all the time

Doctor's answer:

The reasons affecting follicular growth are numerous, among which endocrine disorders are a very important and common cause. Additionally, poor ovulation can significantly reduce the chances of pregnancy and is a very common cause of infertility, mostly due to ovarian lesions or endocrine disorders.