Once your application for adjustment of status based on marriage to a U.S. Citizen is pending, then you would not be subject to removal proceedings based on your unauthorized overstay. However, you could be put in removal proceedings or deported for many, many other reasons even after receiving a green card. Also, if you apply for a green card and are denied, that could land you in removal proceedings. Only U.S. citizens are truly "safe" from deportation.
This answer is intended as public information about a legal topic. Answers posted here do not create an attorney-client relationship. For specific legal advice, please make an appointment to speak with an attorney in private.
The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter,not should it be viewed as establishing an attorney client relationship of any kind.
If you haven't filed your adjustment of status application, then you are still subject to deportation/removal if you come under ICE radar or you commit some sort of violation that gets you arrested. Work with an attorney to submit your adjustment application. There are many forms and accompanying evidence to submit, and you want to ensure that your case is presented in the best light possible. There are also other inadmissibility grounds to consider before adjusting status and that is why it is important to have an attorney evaluate the facts of your case and advise you of the best option to pursue.