Feeling sad...

I've always wanted a big family. So many little ones running around. But the way life has happened, that dream has changed. My husband and I got married in October and have tried to conceive every month and while I know it's only been a few months, I'm already getting discouraged. I tear up when looking at Facebook and seeing all the posts of pictures and videos and status updates. I just want another baby so bad (I do have a six year old - whom is the best and wants a sibling just as bad). I need some encouraging words. Help.