I am 19 years old I have noticed that the inside of my vagina feels almost swollen (like all the walls are swelling inwards). It has been like this for awhile but only recently I have started having very slight abdominal pains--it feels like gas but it is always on the right side and just kind of a dull pain (feels like the area where my ovaries are). I usually experience a little bit of pain upon beginning sexual intercourse, but it usually goes away after a little while. During my last menstrual period I noticed that the blood sometimes seemed very fresh and red (not darker and slightly clotted like it usually is). My skin is also very sensitive so I don't know if this could be caused by tampons or condoms or if it is something more serious.