Don't worry about it. I was disappointed when I received my PSAT results, which were much lower than yours. On top of that, I only got a 69 on the maths section *yikes* which is very unusual for me. However, it was the first time I was taking the PSAT and I didn't even know what it was or how it worked. Now I do, and am determined to score much higher on my next PSAT, and (much more importantly) on my SAT.