How not to throw up? + Advice when ill?

So at night, i reandomly woke up because i felt like i was going to puke, took two hours and then i did puke. I went back to bed and drank a lot of water because i had this nasty feeling in my throat, and I ended up puking again. Im staying off school today, and all im going to drink is tea, will I not throw up when I drink tea? And also, what should I do to make myself better? thank you xx