Red Spots

Your penis is just not conditioned, that is all. -5Hg is not small vacuum by any means for someone who just started. I had these red spots as well. Take few days off and you’ll see for yourself how soon they will be gone.
Mine goes away after 2 days. As long as you only keep having these small ones you should be ok. But once you experience one that is bigger then you have to stop and let it heal!!!

I had them covering the part of my shaft that was not packing the tube. But now after 3 weeks of pumping I no longer get them on these parts of my penis.

Thank you for your advice. When you say once I experience one that is bigger, how big exactly do you mean?

Thank you, I’m gonna see how these next 2 weeks goes by. Hopefully I’m good by then.

There is no exact answer to that. You have to keep watching over your penis and decide yourself.
A lot of people would stop even with these small red dots and let them heal. I did too but then I figure out that I have them after every pumping. They did not care if I was pumping -2Hg for 3min or -5Hg for 10min.
So I just continue while keeping eye on my penis and now they are gone.

But if you need some reference number, these looks like 1mm red dots. I would say anything over 2mm is starting to be bad.