hello, i vsited my gfs house on 23-3-2014 at 12 pm night.,we were having fun,i got aroused and precum fluid came out from my penis,i didnt ejaculate semen that entire day or before,i went to urine also 1hr before precum coming out on same day.just precum came out,at a point of time my penis top just touched her vagina entrance for a few seconds,then i removed it out and didnt touch her vagina again.as a safety she took idoz 72 at next day mrng 7 am. my doubt is is there any chance of her getting pregnant? will semen be present in precum fluid which comes when sexually excited as it touched vaginas top .