My friends completely forgot about me?

Today was/is my fourteenth birthday. And I was supposed to spend it with my three closest friends. We planned it like a month ago. So as the day progresses I'm like... they're probably sleeping, they'll message me back when they're ready to go. Never got a message. One wen to a teen club, one's out, the other one's home. Now I feel like crap because I spent my birthday doing errands with my grandparents. And it doesn't feel like a special day at all. More like a reminder of how sucky my friends are. What do I do?