Feeling discouraged

So I'm feeling a little bummed and emotional maybe it's cause my cycle started today but I'm totally bummed! My fiancé and I've been trying for baby #2 for a year on and off. He keeps saying it will happen when it's suppose to but I can tell he gets kinda bummed every month! Then on top of it we are getting married next year but have nothing planned other then I got my dress. I see all these girls on my fb having babies and getting pregnant and having bridal showers. Maybe this sounds selfish but when is it my turn? I just wanna give up :(