What happened today

Today is Saturday ,but this day wasn't a free day to me.
Today is Saturday, but it wasn't a free day for me.

I have worked today.
I had to work today.

We have many orders in this month and our management decided that this day should be a normal day.
We had many orders this month, and our management decided that we would have to work today.

Of course we earn more money for Saturday work,but as I think money aren't the most important things in a life.
Of course, we earn more money for Saturday work, but I don't think money is the most important thing in life.

I feel very tired....
(it's ok.  I am really tired... is also good)

I hope you feel better soon...