Whatever it is you are doing, do it in moderation.
If 30 minutes is to much try 10 to start with.
Loosen your contraptions, just use common sense.
It might not cause you pain when it changes colour but understand it is a sign to stop.
Here’s the bit that scares me enough to always monitor closely what I’m doing.
If no blood is getting to your dick it will start going numb. The only way you could realize this is by checking. If you don’t check, (or keep pushing to PE longer) your cock could die. Take care
NEW MEMBER PE since 3/3/16
Please correct me on any PE issue and don't take my word for gospel. I post for consideration - xtra