Does a woman's vagina become loose after her first time having sex?

Patient's question:

No

Doctor's answer:

The average length of the female vagina is generally 5 to 7 centimeters, and it may slightly elongate after childbirth. The average length (depth) from the vaginal opening to the cervix is 6 to 10 centimeters, with a width of 2 to 3 centimeters.