I have the same problem, same location, upper inner thigh almost near the outer part of the vagina--however there is no discoloration and can be felt but its not visible. I have no problems during sex but my periords for the last 2 months (since ive had this problem have been little blood and very dark. almost like if I was on birth control--but im not on birth control-- I do not have health insurance so i have not been checked out. the lump has grown in the last month. Its not painful, but a bit discomforting when I sit all day.