Hi. My girlfriend's last period was on 19th april 2019 and she has an irregular period. I had sex with her on 14th may 2019. We had used a condom and there was no wear and tear of condom. The next day she started experiencing abdominal cramps also in her lower back. It comes in intervals. And is still going on. Her periods was supposed to come on 19th may 2019 but got delayed and she is still suffering from those cramps. Her periods were regular for the past 2 months. Is it a sign of pregnancy or approaching periods?