My concern is about post coital bleeding.. I was worried because it was my second time to experience this problem.. my 1st time was just a small amount of blood coming out of my vagina.. my second time was happened after 6mos. Of the first incident. My second time was happened after a day of our sexual intercourse, actually I could described that as a rough sex.. I was lacked of lubricant or I was dry that period... help me what should I do because I'm worried very much.. thnx..

You need to try to use more lubrication such as K-Y and try to make the sex not so rough. The vaginal canal and cervix has many tiny capillaries that tend to rupture easily with little lubrication and rough sex.