How is it possible that im homesick for place ive only been in for 3 weeks -- 3 weeks! -- how how how

I just want to turn back the time, 3 weeks back, and re-live those 3 weeks over and over again

as in kung na-russian doll ako, yun yung gusto kong start point - yung magigising akong naghihilamos sa banyo ng  apartment ko 

"Gotta get up, gotta get out, gotta get home before the morning comes"

hindi pa ko nagsasawa dun eh , and i had to part with it so soon