Hi ontobetterthings,
First off, a 650/Q49 is a solid Score, so it could be enough to get you into your first-choice School. As such, another retest might not be necessary. Depending on the Schools that you plan to apply to, you would likely find it beneficial to speak with an Admissions Expert about your overall profile. There's a Forum full of those Experts here:
https://gmatclub.com/forum/ask-admissio ... tants-124/Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) On what dates did you take your 3 Official GMATs?
2) How long did you study before each attempt? For your most recent attempt, how many hours did you typically study each week?
3) What study materials have you used over the course of all of your studies? Have you used all 6 Official practice CATs (and did you take any of them more than once?)? Have you used any other 'brands' of practice CATs?
Goals:
4) What is your overall goal score?
5) When are you planning to apply to Business School?
6) What Schools are you planning to apply to?
If you're interested in taking a free practice GRE, then you can certainly do so (you can access 2 for free from
www.gre.org). You might consider working through some practice questions before taking that first practice GRE though.
GMAT assassins aren't born, they're made,
Rich