I am 30 year old unmarried girl. From last year my period gradually decreased from 4 days to 3-2 days. Now my period lasts only two days. Not any problems I feel during my period. Normal bleeding occurs. I had sex with my bf 3 (on August 2015, Dec 2015, September 2016) time last year. After each sex I took unwanted 72 ipil for preventing from pregnancy. After that I found that my period is getting less bleeding with less days. From last year 2016 my period lasts two days only. Now I am worried about it. Maybe any problem in my pregnancy after marriage because of less days period? My period is regular as it was. Not any delay in my period I had. Please help me. Should I contact with doctor? I donated blood on November last year. Maybe it will cause of less bleeding?