I'm a bit worried because my girlfriend was expecting her period yesterday, but it hasn't come yet. She recently lost her virginity, and we're wondering if that could be the reason why it's late. Could this be affecting her cycle, or should we be concerned about something else?

Yes, it is possible for periods to be delayed after losing virginity due to various factors such as hormonal changes, stress, or changes in lifestyle. However, it is important to rule out pregnancy as well. If pregnancy is a concern, I recommend taking a pregnancy test. If the test is negative and the delay continues, you can consider taking medications like Medroxyprogesterone (Provera) under the guidance of a healthcare provider to induce menstruation.