I must confess, at first I did not know what you were talking about. In my previous life, I pumped iron in the weight room of the local gym. I was in denial and trying to man up as best I could.
Back to your question. I finally figured out that you are talking about penile pumping with a vacuum device to get a larger penis. They will help somewhat, but do not expect grande
results.
After you have been on testosterone for a few years, you might consider a metoidioplasty, which releases the ligaments holding the enlarged clitoris (neo-penis) from full extension. I have not heard of anyone pumping during the healing process. Only your surgeon can tell you if that is a safe option or not.
