What Causes Vaginal Cuts And Red Rashes During The Intercourse?

when i have sex with my husband i always have cuts in my vaginal wall and sometimes reddish rashes its like a sharp needle putting a red line..blood dosnt come but i know there are fresh cuts n it paind like hell when water is touched..this only happens when i have sex and in the time i use to spread mu legs diffrent ways n etc..but this never happend with me before but becouse of this reason its difficult to have a good pleasurable sexual relationship between me and my husband..it never happens from inside its jus the outside of vagainal hole that evrything that happens n the little pathway between my anal hole is most of the time cut in little line evrytime i have sex...does anyone have a soliutin for this please help me.....