i want only 1 baby....

am i being selfish? i just can't with pain and i'm scared to get pregnant i want at least1 . am i wrong? my boyfriend says he wants a lot of kids because he grew up with 12 siblings. and i only have 2 siblings. 😕 i always been the spoiled brat... because i'm the oldest so i would want 1 perfect angel i can spoil as my biological 👌🏻would my boyfriend leave me ?