You need to sit down with a family law attorney right away and discuss your options. Short of emergency circumstances recognized by the law, there is no "full custody" remedy available in scenarios such as that which you described above. You need to seek an orer defining the allocation of parental responsibilities and the system is complex.
We would be happy to take a call from you at my firm -- the link is provided below.
Best of luck.
In no way am I offering you legal advice, and in no way has my comment created an attorney-client relationship. You are not to rely upon my note above in any way, but insted need to sit down with counsel and share all relevant facts before receiving fully-informed legal advice. If you want to be completely sure of your rights, you must sit down with an experienced criminal defense attorney to be fully aware of your rights.
Mr. Deasy is an excellent attorney and you might consider calling him or an attorney in Larimer County. Once you file for dissolution, you can ask the court to set a temporary orders hearing.+