Hi. A friend of mine who is a virgin had her boyfriend ejaculate on her vagina. this happened 7 days to her next menstraul period. her normal period should have started on the 27th according to a 28 day menstrual cycke but it can on the 26th. Usually, her period last for about 7 days with light period starting on the3rd day but this time, her period was heavy for the first 2days with clots but went by within 5 days.she has done two home pregnancy test( the 1st during the period and the 2nd today) withthe results turning negative but she still has signs like lower abdominal pains, knee cramps, breast tenderness, brown discharge.What her the chances of her being pregnant?