Vaginal Bleeding. Help and advice?

Hi,Me and my partner had a sex on 05/08/2022 and because of contraceptive failure (condom tore up) it turned up into an unprotected sex. However not sure semen has entered or not. But still she took a pill ie., I pill on the same day within 12 hours. The day when we had sex was 6th day of her periods. Her periods began on 31/07/2022. Today it is 12/08/2022 and she is facing pain below her stomach and waist. She had vaginal Bleeding also. Though not so much but very less. She is having acne on her face as well. She has a 30 days menstrual cycle normally. I am very concerned what could have happened? Is she pregnant ? Yesterday we had a pregnancy test as well which came up negative. Kindly help and advice ? Will be grateful. Attaching the pic of Bleeding as well. Kindly help.