Stress

Hey guys, Next year I am going to be taking calc 1 and 2. Having heard how stressful and hard these classes are, I was wondering if the rumors are true, and if so, if I should be stressing over it as much as I am right now. Also, I was wondering if I could get some tips for how to cope with the classes. Also, while being in high school would usually put me in AP calc bc, my school does not offer it, and instead works with a local college for duel enrollment. How much does that change the difficulty of the class?