Zhukov, now a lieutenant-general, is assigned to the First Soviet Mongolian Army Group in July. After being given command of the group he prepares to take on the Japanese. The conflict climaxes at the Battle of Khalkin-Gol, beginning on 20 August.
If you have a normal 28 day cycle, you are most likely to become pregnant when you have unprotected intercourse approximately 2 weeks before you anticipate your period to start.
Any time you have unprotected sex you can get pregnant. Most women ovulate about 14 days into their cycle (counting from the first day you bleed) but not everyone does. You could of ovulating during that time that you had sex. Even if he didn't c*m in you precum still has sperm and it and can impregnate you.