Hellow Sir. On 8th September An Accidental Event Took Place

Hellow sir.
On 8th september an accidental event took place in between me and my good friend ( female) . but when we both realised that it should not be done we stopped.but I didn't ejaculate incide her as the time was about 20 -30 seconds. On 20th Sept she needed expecting her periods and on 21 St evening it ended.
Say me if there is any thing wrong what should I do next. we r from kolkata near agarpara.
Need suggestions terribly... Plz reply