Hello! Am 20 years , female I had intercourse on 28 Nov and than on 9,10 December, for first time it was protected sex all Time , but my periods are delayed ,they were supposed to be on 7th of this month , last month date was 11 ,  he never ejaculated inside , with delayed periods I get occasional very mild cramps and backache ones or twice my vaginal discharge was cloudy white few days ago but now is less white and stretchy am I pregnant?