My girlfriend has had irregular menstrual cycles all her life. We always have protected sex by using a condom and I check for tears and leaks by pouring water inside. There has never been a break or leakage. About 3.5 weeks ago she had really painful cramps during her period and she said to me that she thinks her period is becoming regular because of the pain. Between then and now we had protected sex about once or twice every week.
About 3 days ago she started feeling the same very painful cramps but this time there was no blood (yet). Aside from her normal period symptoms (cramps, slightly tender breasrs and vagina) she has been feeling slight bloating and constipation-like symptoms, which she felt on her last period. Just last night she said she thinks her period is coming soon because she had faint blood marks that was pinkish. She said it just looks like dilute period. No nausea vomitting exhaustion or morning sickness.