Dreading tomorrow 😭😭

I work in a school, I have just had 2 weeks off- I have slept in every day and it feels SO good!! I only found out at the start of the hols I am 6 weeks pregnant now. I am EXHAUSTED!! how am I going to go on tomorrow for a 9 hour day I also 1:1 with a child with SEN. It’s hard work I slept in until 11 today and I’m absolutely shattered already 😭😭