Is It Okay to Start Trying for Baby Number Two?

I feel so guilty because she was amazing at planning my hen do and helping with my wedding plans. And I really want to be there for her and do the same. However, I can't help but feel like I can't put my life on hold just for someone else's wedding. Especially as we don't know how long it will take for us to fall pregnant as it took us around five months with our first. So I'm going to go out and get up. Should I ask my best friend if it's okay to start trying for baby number two or should I not be selfish and wait until the wedding is done? If you're a good friend, she's going to be