Actually, I have discovered that you can avoid the long wait for them to walk to the hut, go in, and come back out... AND you can tell when the woman got pregnant, if you're actively trying to increase your population or training parenting levels.

To force population growth, concentrate on one woman at a time. Note the population number, then just keep picking her up and dropping her on a man. The number will either stay the same (unsuccessfull breed) or go up one (indicating that she's now pregnant). They don't have to ever get near the hut. The kissy sound is the key. If your number didnt go up, pick her up and drop her on him again (or pick another guy). Eventually, the number will go up.

Even more fun... if the number goes up and you grab her and put her down again, the baby will appear immediately.