Me and my gf had unprotected sex on 26 of May. We went to pharmacy and she got progesterone injection (50ml) after one hour. The day after that she consumed an ipil after almost 19 hours. I did not ejaculate inside, but we still worry. Her last period started on 6 May until 10 May. along with that she always has irregular cycles. We took blood pregnancy test after three days and the result was negative. After five days, she feels nausea, lower abdominal pain, and headache ( went away after two days).

I am wondering is she pregnant and what's her chances to be?