can a 3 month pregnant woman cut the grass with a lawn mower.

Yes but you have to be careful- don't strain yourself too hard, mostly just don't overheat. Don't cut the grass in the mid-afternoon- do it either in the morning or evening. Also drink plenty of water and rest often.

Also remember as you get more pregnant you will have problems with balance- not only because of the increased size of your belly but also your tendons loosen to prepare for birth. So make sure you're careful around the mower, you don't want to hurt yourself.

Haha what a random question. I would think so though.

of course...

Sure. Exercise is beneficial for both pregnant and non-pregnant people. Sweat doesn't hurt fetuses.

Of course, I suppose in theory there would be some chance of contracting lime disease, having a severe allergic reaction to ant bites and having to take some possibly detrimental medication for it, or giving herself and the fetus cancer from inhaling the gasoline 50 years down the line.