We're on month 12, DD took 22 months to conceive so I wasn't expecting it to happen quickly. I do have times of feeling very down and to the point of desperation as I just wish there was something I could do. Looking back now though I am so glad it didn't happen immediatley for us, DD is such good fun and I love the special time we spend together, I almost feel as though I'd be missing out with her if I had a newborn already - It's my way of trying to put a positive spin on it anyway!
Like you say I feel almost guilty at not 'giving' my DD a brother or sister, she is baby crazy and she'll make a fab big sister!
Good luck and lots of babydust to you xx