My Mind!!!

These few days my mind just always appear something that undescrible, weird and uncertain. I really can't figure it out what exactly it is but just know got something. I felt so tired with these!!! Sometimes i really hope to know am i too concern them and so now become like that??? Am i think too much already??? Is our friendship had changed??? Why it seems different since we first met till now??? I don't know, but i do hope to have an answer from you......