I have 15 sims and 8 pets on my lot using Inge's teleporter shrub, the pet teleporter from mts2, Squinge's mod, ACR, and my sims are STILL able to "try for baby". That's how I ended up with sims # 14 and 15.
I do have Doc Doofus' mod installed, still.
ETA:
Disclaimer: Do this at your own risk, as I've been told for 2 years that my game is a BFBVFS about to happen.