LDR TROUBLES...

So me and my SO have been in a relationship for 2 years. I’ve been looking forward to being able to see each other again, and he was supposed to come last month but he said that he couldn’t make it. Now I’m getting so anxious because I really miss him and I bring it up almost everyday. And he’s starting to get mad and annoyed by me asking when’s the next time he’s going to come. I really love him but I’m sick of waiting. I just tried to bring it up again and he just shot me straight down. I miss hugs and kisses and cuddles. I know LDR’s are hard but I just want to be with him. Any advice?