I was reminded about something I read awhile back in a PE guide I bought from a sex shop.
I've been applying for disable veterans status and part of it is the jock itch scar on my shaft I mentioned before. The skin will crack on it if I'm too active, and i needed photos of it so I decided to masturbate ravenously today =P and my wife promised me a couple handjobs later today. Anyway it prevented me from getting hard enough to do my jelq session and that reminded me of what I read.
The literature said that you shouldn't have any type of release(masturbation or sex) before jelqing, or for the rest of the day after jelqing. Beyond my inability to maintain a proper erection for jelqing today as that isnt typical, is there any reason you shouldn't ejaculate in close proximity to you sessions?
Have you tried applying cocoa butter or some other light vitamin-enhanced cream to your skin?
If you're looking to abstain from ejaculating for whatever reason, you should know that any built up semen (from "edging", sex, masturbation, etc.) that isn't expressed through ejaculation will be voided the next time you urinate.
For more details, I responded to a discussion on masturbating and PE results in greater detail here.