In short, no.
AAS are not a reliable form of birth control. As someone pointed one, big ron impregnated several different women while taking mighty doses of AAS.
It all depends on your physiology and genetics, everyone is different. And not everyone gets completely shut down even by tren.
Some people end up with testicles the size of almonds while using steroids, and I have never noticed that particular side effect. Similarly I carry on producing sperm on whatever compound.
So in conclusion, enjoy your new kid.