Is this the bloodblister?

Im doin newbie routine:
hot shower
15 strech 1min lasting streches(I done that now 4 weeks without problem)
hot shower
30min jelq
hot shower

I got my first ligpop yesterday.today when I have done streches I notice little bubble in my dick,I dont feel any pain to streching.So what you think do I overstrech or why I have this bubble on my dick.whoud I take 1week off on PE?

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The Newbie Routine is 10mins of jelqing, not 30!

Could be a blister, any chance of a pic for better analysis?