You could say "I had a long day" instead of "I had a tight day." The word "tight" can have a negative connotation, so it might not be the best choice if you want to express that you were busy but productive. You could say "I worked all day" instead of "I worked whole day." The word "whole" is unnecessary in this sentence. You could say "I am exhausted" instead of "I am very tired." The word "exhausted" is more descriptive and conveys the level of tiredness you are feeling. Here is a more improved version of your sentence: I had a long day. I worked all day, literally. I am exhausted. I hope this helps!