Hello Doctor, I Am An Youngster. I Am Having Issue

Hello Doctor, I am an youngster. I am having issue like i am overthinking for all small things. This is making me more stressful. There is one thing disturbing in my mind,that is i usually masturbate in bathroom once a week and then bath. But i really fear if a little drop of sperm would have chance to stick in mug or bucket and if any of the family person unfortunately touch and finger in vagina, would that lead to pregnancy. am really worried about it and it's making me stressed. Kindly Help.