"Safe" is a strong word but to my knowledge the odds are very, very greatly in your favor.
For your test to fail would take a combination of unlikely things: their choosing to do a test that ordinarily would not be done, plus a supplier providing you different and more expensive drugs than you paid for, such as nandrolone for testosterone or Winstrol for Dianabol. Such a combination seems extremely unlikely. Even then, while a test that went directly to GC/MS might fail, I'd expect it to pass initial screening. So it would take a really unlikely combination of results to give a problem. Not necessarily impossible, but really unlikely.
You ended use with plenty of time to spare. The above is just tending to be precise rather than saying things absolutely.