First of all, when you go to court, the charge(s) may or may not be prosecuted by the prosecutor. In DC, among other possible (misdemeanor and felony) charges you could be charged with based on what the police may be saying about what happaned, what most people consider as trespassing is called "unlawful entry" here. This is a misdemeanor - the maximum punishment is 1 year and/or $1000 fine. Often the government would allow a stet docket - meaning if you do certain things or refrain from...
If you are asking about the District of Columbia, the majority of criminal offenses are prosecuted by the US Attorney's Office for the District of Columbia - both in the local Superior Court or in US District Court. More information about DOJ (of which the USAO is an agency) can be found on their website www.usdoj.gov.
The Public Defender Service has a handout to assist people with this processs who want to represent themselves. It may be on their website - www.pdsdc.org. or you can pick it up from their office. Or you can consult with private counsel. You can ask for a copy of your court records from the criminal division of superior court and get a police arrest record from the police department.
There are diversion options which if successfully completed, you would be facing no time in jail. There is no mandatory or minimum time and the maximum is 180 days and/or $1000 fine. You should consult with private counsel or court appointed counsel, if you were found eligible. If you were released by the police on citation, when you come to court, counsel will be appointed to you if you are found eligible.
Often times, it is not too late but it also depends on the case and the specifics - changing lawyers can affect other aspects of a case. And the judge makes the final decision on whether to allow the other attorney out and your new attorney into the case but that may not be a problem unless there is a trial date that counsel can't be available for. Like others have said, you should speak with your current lawyer about the situation, evaluate his responses and speak to other counsel to...
Your available options depend on timing - your best course is to file a motion with the judge for return of property - you can do this if the seizing authority has not acted. You should consult with an attorney before you try to do anything yourself.