If I DIDN'T do WELL on AP exam, should I go to TAKE the CLEP instead of take the class for another year?

Question:I took the AP Calculus AB on May, but I didn't do quite well on that. I did good on that class though, I just didn't feel right on the test day so I might not get a 4 or 5 on that.
Should I go to take the CLEP Math exam instead of take calculus again in college?
It really takes too much time and since I pursue Engineering major so that many classes in my college needs a cal-II prerequisite. I got A and did well on my high school cal-AB class, so I don't wanna take it again in college.

P.S. I am a high school graduate right now and will attend college this Fall.


Thanks for your suggestions.

Answers:
You should check what college you are going to. See if they even accept clep exam. Also wait until you get your exam scores in the summer...you paid for it, so it doesn't hurt to see how you did (do not cancel them). If you didn't get above a 3, then just take it again. If you are in engineering then it wouldn't hurt if you retake it. I am sure you would need it down the road. If you feel confident that your score are not an accurate indication of your knowledge in calculus then just contact your school and ask.