Can sum1 answer me out...?

My gf started her period on the 31st of march and i fingered her on the 3rd day of her period 2nd april and agn on the 6th day of her period 5th april....i dint have *** on my fingers but m not sure about pre-***...n i gues she ovulated around dates 15-18th april but not sure enough...is there any chance of pregnancy..??