Hi amusicboxmelody, Welcome to PC.
Did something happen on your trip? I agree with AAAAA, communication is key to making a relationship work, in my opinion. Maybe you can write down things that you feel need to get discussed and have it with you when you talk to him? Or write him a letter? I think that moving in with each other while things are not going so smoothly would not help the situation as it would cause more stress.

Please keep us posted and welcome.