Am I overreacting?

Today is my 19th birthday. I don't expect much but a simple Happy Birthday. My boyfriend decided he wanted to sleep in. That's fine but we have plans at 1:30 pm to take pictures. Here it is 11:00 am and he's still not up. I even went over to his house to wake him up and it's almost like he forgot it was my birthday. I was so hurt and pissed off I ended up leaving. He didn't even ask me where I was going or anything just ended up falling back to sleep. We're not going to make it to today's plans all because he decided he wanted to sleep in. They are HIS PLANS not mine. He takes over an hour to get dressed/ready, and it takes a hour and a half to get there. Plus eat and do whatever. This is so fustrating!!! Am I overreacting??