When doing heavy physical labor, there is a small amount of vaginal bleeding. What are the factors or causes?

Patient's question:

It has been about half a year. Whenever I do heavy work, there is a small amount of vaginal bleeding that lasts for two or three days. Recently, the amount of menstrual flow has been more than before, and the menstrual period is two or three days longer than usual. How should it be treated? Thank you

Doctor's answer:

Hello, if your condition is caused by factors or underlying causes such as relatively low estrogen levels in the body. Suggestions: It is recommended to consume more soy-based products regularly, maintain a balance between work and rest, avoid staying up late, and relax your mood.