I have never blast/cruised, but my wife got pregnant while I was on tren and test (and I'm sure there was deca and EQ in there too.) And this was toward the end of about a year of too long cycles with too short off times.
I also knew a guy who was "on" for over 2 years straight (NOT HRT) and got his wife pregnant.
Both mine and his were premature by 3 and 2 weeks, but were and still are perfectly healthy. No problems whatsoever.
Hope this helps at least a little.