Working in office

Now is 12.15 am already, on a Friday morning and I am still in the office. I was out for meetings for the whole day since 10am. I got back to office at 10pm and my higher mgt saw me coming back was shocked and asked me to go hm. I told her I am already here, I might as well work already, then go hm. My immediate boss smsed to me saying 'Please go home and sleep'. I really appreciate for their concern. I really wish to finish my work, then sleep or else my other colleagues or clients might think tat I didnt work or dont want to reply their emails.
My body n eyes r so tired and sleepy. I want to sleep now. I need to rest for a while before working again. I think I have sold myself to the company when I signed the contract. haha
The last few days I can hardly sleep, going home at 1-2 am every night, waking up early in the morning. Everyday, my boss n I have to go down to Paragon 2-3 times per day to look at the start-up. Luckily for us is the client is a fair person who deals with matters but not person.
Today we just look at one batch of models, tml we will be looking at another 2 batches of models.
Long day for me again.
I shall have to stop here and start working again.