Hi, I am 18 years old and have been sexually active for a year and a half with my 20 year old boyfriend, when we first started having sex, my vagina was fine, the sex just felt good, more recently though (we have been getting rougher) we have sex once but if we try again than I get a sharp pain in the bottom half of my vagina, sometimes I can just fight through it and it stops after a minute, but others it stings so much we stop within a few seconds...the pain has gotten worse and worse...the passed 2 times though he will stick just the head of his penis in and I start to bleed and get a stinging sensation....please help!