My Uncomfortability

Last week, i have met my teacher in my English 2. We've been okey with her but one thing make me uncomfortable in my class. The unusual thing happen in my life with this subject.It is not because of my teacher nor my classmate. Actually, I just get trouble with her rules. Speaking English for every time we meet makes me uncomfortable in my class. It is not because I can't understand her but it turned me to a behave student which I cannot handle for the whole period since I dont really love to speak in a language that very sensitive with pronunciation. On th other hand,Knowing that it is for our own good still encourages me to be present at all time.Anyway, It is nice idea since It gives me a task to practice very well. Should I thank my teacher for that?