You made a bet with another girl over who could stay locked the longest, loser gets photos of them in their belt released in the college forums boards. The first month was fine, the second month was hell, but the 3rd year? Even using the bathroom was eno
Its been 3 weeks since you got locked, you are not allowed any stimulation of your little clitty at all. This is what you have to resort to for orgasms now.
You always thought you had problems with being insensitive down there, however, it would appear you just jerked off too much and lost sensitivity, 2 months in chastity fixed that.