My girlfriend was pregnant for about 2 week and she accidentally trip herself and fall on the ground on 16/01/2024 from that she feel lower abdomen pain and after that blood came out from her vagina and bleed for about 7 days we have unprotected sex on 17/01/2024 and after 7 days of bleeding we take pregnancy test and it came out negative and on 25/01/2024 we have unprotected sex and on 26/01/2024 she took ipill (emergency contraceptive) but no side effects appear and on 30/01/2024 she start bleeding heavy and she start having side effect and pregnancy symptoms like frequent urination nausea vomiting lower abdomen pain back cramps and the bleeding stop on 4/02/2024 and on that day we take pregnancy test and it still came out negative, can you tell me is the pill work and she is not pregnant.