Boyfriend left me to babysit for 2 hours and has been gone 6, what to do?

A guy I just started seeing, we dated years ago when we were teens and are now trying again, had me babysit his 3 kids while he went to work for a couple hours. It has now been 6 and a half hours since I've heard from him and his phone is going straight to voicemail. I'm an extremely jealous person, so my mind wanders and thinks really bad things. But I think I have every right to request a call or text when I am watching his kids. So any advice? I don't know if I'm making this into more than it is or what, any advice would be appreciated.