Maryland  |  DUI Law

I was drinking at a bar and I everything after I do not remember. This is what my 2 sober friends told me. We left the bar I was in the back seat and my pregnant wife was driving my truck. She didn't feel comfortable driving becuase she is 38 weeks pregnant and wasnt feeling well. She then pulled over to the side of the road and switched with my friend that was in the passenger seat. A cop pulled up behind us and asked what was going on and thats when I rolled down my window from the back seat and told him we were switching drivers. I guess he assumed I was driving. Then cop then told me to step out of the car and had me perform a field sobriety test. Then took me to the station and had me blow. Let me remind you that I do not remember any of this. After blowing a .16 he then wrote me up for DUI, DUI per se, and DWI. My 2 friends which were completely confused and just followed orders because none of us have been in a situation like this before. They tried to tell the police man what happened but he was more focused on me. I woke up the next morning and now stuck in this mess. I need help.