Hello, DudeLovely2015. Thank you for your message.
Your girlfriend is not pregnant as all the evidence has told you. For all intents and purposes, there is a risk of pregnancy when a woman has unprotected sexual intercourse with ejaculation that enters the vagina. The highest chance of pregnancy is during ovulation.
Pre-ejaculate fluid in itself does not contain sperm. Sperm can be picked up the urethra if a man has not urinated since ejaculation. But once he urinates, any sperm would be flushed out. While not impossible, it’s very unlikely to become pregnant from pre-ejaculate. What you did was risky as accidents can easily happen. For future, always use a condom during any genital to genital contact. It's also a good idea to educate yourself about sex. It will reduce a lot of stress that the unknown can cause. There is a lot of information on our website and in books. Try to relax, your girlfriend is not pregnant.