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.
When you have irregular periods, that question of can I be pregnant becomes harder to answer. You should be able to test about two weeks after you had sex though, if you don't regularly have unprotected sex. If you do, and you are trying to conceive, just take pregnancy tests like once a week. Pregnancy symptoms can also show up within two weeks or so, by the way.