I can tell you, without question, the moment that I caused material movement and it was during that session. I went into that session with almost perfect symmetry. During the masturbation, I noticed immediately when the \"dent\" suddenly appeared, right at the point where my thumb was.
This procedure is ,by no means, an exact science. There are no \"in the know\" guys who can tell you the exact progression of PMMA, in terms of absorption of carrier, overall results, long term effects, when collagen will form for you, etc. All we have is personal experiences, many of which are different, as is the case with natural PE as well.
I can tell you, from my own experience, micro-spheres moved at day 10. That is not conjecture or theory. That is reality, so my advice would be tread with caution, error on the side of caution and don\'t screw with your unit, sex or masturbation, post-procedure, until you feel comfortable with your own progression.
I am pretty sure the carrier is absorbed after a few days (around 4) and you really can\'t move the stuff around. You can jerk off after a week. Given that there is a time lag between where the PMMA is in the first few days and collagen formation which can be weeks later it may seem like you did it by jerking off, but it may have migrated in the first few days, unless that is when you jerked off - sorry if I misread your post.
Jerking off is basically massage which you are supposed to do - you just need a week for the stuff to set.
Mine didn\'t move around to answer the question, but I am not sure if you mean after it forms into collagen - and that does not move either.
I wouldn\'t masturbate for \"atleast\" the first couple months, which I knew, but did anyway! I tried to be cautious with a very light grip, but, alas, caused an issue to what was almost perfect symmetry. I caused a small \"dent\" behind the glans.
The lump is just under my base, about the size of a small grape....and I can feel where the PMMA actually settled in a stream down to the lump. Hard to describe, but it\'s there. It causes no issue other than when Erect, if I pull it upward the lump is obvious.