Am I over reacting?

[watshername]

So I met Ollie at my friends house party. I have seen him before a few times and thought he was really cute but never really spoken to him much but this time we really got on. At the end of the night he asked for my number. I gave it to him and he text me the next day and for the following week. He come over on an hour and a half bus journey to see me and we had an amazing date and had so much fun. He was texting me the whole of the next day and made plans to come see me tomorrow after he had been away. He had to go away for sat and this evening to see his friends and do a job. He didn't text me this morning so I text him first for a change to ask how his night was. He text back about and hour or so later so i text him again but I haven't heard anything for over 5 hours. Am I over reacting thinking that he doesn't want to come see me tomorrow? I won't text him now unless he texts me but I want to know if he is coming over tomorrow or now as it's horrible to just be waiting. This has happened to me a few times when I just don't know what I've done wrong with a guy and they just ignore me for ages. It's hurtful and embarrassing. Any advice?