I hardly feel anything following a Primo inj. I thought it was because my injection technique has improved because we don't have a problem with fakes or scammers but is it possible that it is not particularly good Primo btw it is Schering [Spanish].
I've got the Spanish primo too, and it doesn't hurt a bit.
Takes forever to draw it up though. warming the amps up helps with both issues. Having said that my first injection which i did in my thigh did hurt and I had a knot in my muscle for days. Since then I've been doing glute injections and not feeling a thing.