boyfriend left for D.C.

So he's in a really great convention to represent highschool students in security efforts with our rotc program. He's gone for 10 days I spent his last day here with him the whole day and a date the day before. Before he left he took care of me 😉. But now he's gone and I can't help but be in a bad mood and stuff because I love him so much and I miss him he doesn't have much time to talk am I over reacting?