What was your math/verbal breakdown?
Did you have timing issues?
In those 4-5 weeks, were your scoring higher on practice tests?
You're not giving us much to advice you on. That being said:
Use your current GMAT results to come up with a study plan. Work from your weakest areas up. Use specific content (
MGMAT, Kaplan, Veritas, our forums, etc) to learn the content and strategies. Take practice tests every so often (every week or two) to access progress and adjust your study plan if need be. Keep an
error log as this is key to overcoming obstacles (the GMAT questions are written to stratify test takers, you need to figure out how to get past certain thresholds).
Best of luck,