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.
You can't become pregnant if you have sex on your period. That's somewhat true if you have regular monthly periods. However, some women who have irregular periods might be spotting and not actually menstruating, and if that's the case, it's definitely possible you could still get pregnant during that time.