First of all, nothing prohibits you from getting a new attorney or seeking the advice of another counsel. If you feel that your present attorney has not represented you well, the time to switch is now.
That said, it is oftentimes difficult to get a new court date; your attorney may request one, but getting it is not necessarily possible. Continuances are discretionary, and the court has the power to accept your request or deny it. Your attorney is correct in telling you that it might not be possible.
As for talking to the judge without a lawyer, this is not a realistic possibility. When you go in front of the judge, it is very unlikely that he or she will allow you to speak while you have an attorney---this is for your protection.
You should speak to your current attorney about what she has done and what she will do to get a continuance in your case; if you are not satisfied with her answer, or if you do not get a response, you should thereafter consider speaking with another attorney about substituting in for your current attorney.
If this was informative, click "accept" so I may receive credit for my personal time and effort. Thank you.