Newbie's question

Hello everyone,
I just started the PE exercise two days ago.
The follwing is my routine:

10 minutes hotwrap.
15 minutes Length Xtender
600 Jelq
10 minutes hotwrap.

The first day's exercise seems well.
But after the second day's exercise, I met some problems.

1. I felt a pang that I can't bear when I piss after I have finished the excise.
2. My foreskin was not cut. I don't know when should I stop jelq. should I stop just when I touched the head ,or after I
passed the whole head?. I select the second method. So each
time I jelq, my foreskin stretch very long and fully cover the head. Almost a whole day after the excise, my foreskin
cover the head completely. It make me very uncomfortable.
It seems that the foreskin grows more quickly then the dick. I am afraid that might cause some illness.

I have stopped the excise to avoid more harm . I hope you can solve my problems. thanks.

[Dance]

I am cut so maybe others who are not can answer better. Try pulling back the foreskin and then jelqing with the other hand. I would stop at the head and not go past it.
Dance

Thanks, Dance.
It seems that I used wrong lube and the wrong method.
Yesterday I used Baby Oil as the lube.It works very well.
I stop jelq just after the head and I only do 300 jelqs.
Then I didn't meet those problems.

i would like to know the answer to this as well