Dripping precum - small relief?

[crazyforsex]

I've started going for some days with heavy teasing and no orgasm.
So, the webteases here are driving me really horn, I can feel my balls getting heavy with unreleased cum.
However, when a drop of precum goes out (usually, more than a single drop) I sometimes feel something like a very very small relief. Of course, the urge for cumming doesnt pass away, but if I were on an edge, then I'll have to stroke some more to get back.
Sometimes my precum is quite thick, and I wonder if I'm not letting some real cum go. This is very few compared to what is held in my balls, but I feel like... uh... spoiling the fun of keeping as much as I can to make my balls ache.
Is it normal, am I only caring too much about? Or should I be more careful when edging?

(sorry if I wrote bad english!)