2 periods in one month, have been stressed due to exams and had a cousin died which i took badly. could it be due to this?have also practised safe sex

Stress and periods: Absolutely, stress can cause alteration and fluctuation in hormone levels and create 2 periods in one month. If it happens for longer than 3 months, there would be more concern that something else is going on and need further evaluation form either your primary care doctor or an OB/GYN doc.My condolences on the loss of your cousin. It's always hard dealing with our own mortality with these tthings