How to survive required speech class

I am enrolled in speech class , and this is my first English-speaking classroom experience in the USA. My advisor put me in this class, but I realized too late that I should have taken it in a later semester. I am a very introverted person, and on the first day of class, I completely got cooked while giving my speech. The topic was very simple and easy, but I froze. After introducing my speech, I went blank and couldn’t say a single word. The speech was supposed to last about 30 seconds, but I only managed to speak for about 10 seconds. There is a whole semester ahead of me, and I have to give total of three speeches and other short speeches in class where I get only a min to prepare , I am just scared thinking about it, how am I supposed to survive this?