Hi there, I am 37 years old women and my menstruation cycle is 28 days. I had my period on November 2 and December 2 with normal length day and flow. However, I got my period today again at December 13 with old color of red. Do I need to be worry? :( I had steroid steroid shot twice to reduce the keloid scar on my breast this month. Will that cause it? and also I had unprotected sex with my boyfriend on December 8 and 9. I heard if two period is less then 10 days apart, it could turn out to be serious problem?