My menstruation cycle got delayed from 21 days to 30 days this month and it is more painful compared to previous cycles. Also the bleeding seems to have changed. I am getting continuous bright red discharge for last 4 days as good as only blood dripping out. Normally on 4th day the discharge is less. This time my napkins were completely stained on 4th day as well with bright red colour and it's painful as well. Since period got delayed than regular time I did pregnancy test twice that came negative as well. About a year back I had vaginal infection history. In last month I did not have any symptoms of vaginal infection. However period got delayed.