Am I screwed? Police lied on official report.

I was at a co-workers house, sleeping on his couch at 4 A.M. when I was awoken to someone shouting "This is the police". I got off the couch and peered into the hallway, an officer was standing there inside the house, came up & immediately arrested me. I came outside and my friend was sitting on the ground in handcuffs. They said they got reports of a person stealing out of cars and that my friend was the main suspect. I didn't understand why I was still under arrest and they would not talk to me. They eventually patted me down and searched my backpocket, finding the weed. The official police report says: I came out of the house on my own accord. The officer then asked me if I had anything he needed to know about. I then told him I had weed, took it from my pants n handed it over. My friend was found outside of the house when he was arrested. He told the police they could not enter without a search warrant. Later in the investigation when the police were trying to convince him to admit to burgalary and give back the stuff, he said he didn't do anything and they could look inside the house. The officers said "we can't go in the house, you already told us we can't go in without a search warrant". I started screaming you guys already came in the house and arrested me. They didn't respond. My friend was charged with burgalary and I was charged with possession of marijuana under 20 grams. The cop also kept my cellphone, wallet, and keys - never turning them into the jail or police station. What are my options?