Is there a chance of pregnancy? Help

Patient: Hello, I am 16 years old and had sex with my 15 years old girlfriend for the first time. I was stupid and did not wear a condom. But I did not ejaculated in her, also I pulled out very soon and pre-ejaculated outside her. I also peed before sex and I heard urine kills and flushes out sperm in pre-cum. Please could you tell me if there is chance of pregnancy? Thank you