On 8th august I had an oral sex with my partner. I kissed his penis just once or twice from the tip, it was not ejaculated and after that we lip kissed and he inserted his finger inside my vagina. I had my normal periods in august september october november december. And now in january my period date is 25th january and I am feeling the symptoms like pain in right side of lower abdomen and pelvic area, breast tenderness and a little brown discharge. Please suggest me whether it can cause pregnancy or symptoms of pms?