Need to vent!!

So many of my friends on Facebook keep announcing pregnancies over and over and over. "Look at my belly" and ultrasound pics etc. I get so frustrated because hubby and I have been trying over two years. My periods keep getting more and more irregular and the doctor doesn't have anything substantial to go on. I'm just at my wits end and I want to be a mom so bad! I know there are others in here that feel the same way so I just needed to get it out of my system...