How long did it take?

How long did it take to conceive number 2? I’m on cycle 7 ttc and I’m losing hope and I think it’s never going to happen. My daughter just turned 4 and she was conceived the first try and we only tried once during fertile week. I really thought it was going to be that easy again. I stopped my pill August 11th and still not pregnant 😔 AF is due Wednesday and I already know she’s going to show.