There are going to be lots of times when your boyfriend or your loved ones are not in contact with you for longer than 5 hours and that does not mean they are in danger. Do not let this control you because you could be doing so many other creative things with your time right now, seriously. No guy (or girl) wants to have their significant other checking up on them so often - I am dating a man right now and we can easily go an entire two or three days without texting or talking to each other.
You don't need anyone but yourself and if you insist on having all certain types of people in your life constantly check up with you to make sure they're okay - it will seriously drive people away. I'm not trying to scare you but I am being completely honest.
People need their space - it doesn't mean they got mugged or kidnapped or anything like that.
Go take a hot bath with candles, listen to music, meditate, watch videos on youtube, watch tv, read a book, paint, nap, eat, do anything to take your mind off of this because it is obsessive thinking and it doesn't control you.