My Girlfriend and I had unprotected sex. She is on YAZ and has been on it for about 4 years for other reasons like acne and to regulate her period. Anyways, we didn't use a condom and had sex three times in one weekend. I made sure to urinate before each time to clear my urethra as best as i could of any sperm cells. I also used the withdrawal method and no Semen got inside of her. So, I have heard stories about people getting pregnant on YAZ, and I have heard stories of people getting pregnant from Pre-ejaculatory fluid, but has this ever happened to anyone? Am I worrying too much? Is this all in my head? Please and thank you.