How to prepare....

How do you prepare mentally to start a family. Im on bc and i honestly dont feel in the mood anymore. Always afraid the pill wont be enough and condoms break. I know its not fair to my husband. Im 26 and hes 27. Hes ready for a family just waiting on me.... I was an only child never grew up with younger sibilings or cousins. What is wrong with me.... Should i just let go and do whatever..... Maybe i need to find an obgyn and discuss with her my fears.... Grrr hate the way i feel right now...