1. There is clear Picture that you had make intercourse before 5 days and you already have taken precaution and do not get discharge in your body..
Simple there is not any chance to get you pregnant.
2. Second thing about the symptoms like nausea
and swollen breast are may be by hormonal
changes which cam i your body after the first intercourse and also you may be in tense about the pregnancy
or your first intercourse..
Do not worry .. wait and watch it will be sub site by making yourself relaxed..
Dr. Nikul Patel