Any advice ladies?

I've been trying actively for a baby for almost 7 months now. I've been taking the needed vitamins like prenatals religiously and making sure I'm eating healthy. Everyone who knows that we're trying says that "it'll happen when it happens" or "enjoy the time you have together." I understand both statements but I'm starting to become bitter every time someone says that to me that was able to get pregnant with no problems. How do you guys handle that? And how do you handle seeing pregnancy announcements on Facebook and other social media all the time? I feel like I'm getting really bitter and I don't want to feel that way towards people I love and care for. Please help!