Test P is not at all painful to inject, is it likely fake?

[Windex]

The test Prop is what I have started this cycle on but am switching over to Test E which I have more of. I will only be on this cycle for another 8-9 weeks and was hoping to add NPP if it was going to make things easier on my joints.
Even with Test E I wont have to worry about the test for a while, but I will likely stay with Test P for any cycles later in the year.

All of those will make you fail the test