Boyfriend away for the weekend

Im
Okay, so my boyfriend is a pyro and the company he works for every now and then got through to a firework championship. He went today and it's a couple hours away and his boss has paid for his hotel room and everything. And normally we are texting each other all the time none stop and most of the time nothing we say makes sense 😂 but..... He went quiet for about 3/4 hours after he had a meeting with his boss and team about last minute things to remember or changes etc. He never goes quiet like this and the meeting finished coz he text me saying so and after that I didn't get anything from him. I trust him completely and have no doubts about our relationship but I have this gut feeling that something is wrong but I'm just trying to tell myself that nothing's wrong and his phone died or something but there's this little thing nagging away at the back of my brain saying somethings not right. 
Is it just me being silly or...? 
Sorry it's so long, just needed to rant and get it off my chest! 
Anything POSITIVE (helpful) welcome, if you're going to be a negative know it all bitch don't bother commenting 😊😘