What would you do ?

My boyfriend spend all of our time together. Except when we're sleeping. We are best friends have been for three years and decided to date now. But we are both in college, have classes together , and see each other everyday. We just came back from a trip a week ago. This week has seemed a little off. Like both of us were getting irritated with each other, our conversations were short and we haven't held hands or kissed. Today I finally asked him about it to see if he felt the same and he said yes. He also agreed that it felt weird. But I was wondering what do you think we should do.