Hi hon,
Found this on the web - hope it helps
karen xxx
Balancing a laptop when your lap has lapsed isn't easy — but it isn't dangerous, either. Though one study did show a link between the heat emitted from a laptop and a decrease in a man's fertility, most experts agree that such low levels of heat don't pose any risk to a developing fetus. Neither is there a radiation risk to your baby from using a computer or a laptop. But, to play it safe, keep the laptop on top of your lap (closer to your knees) and not on your belly (which would be a tough balancing act anyway). After all, it's not called a bellytop. Even better, keep the laptop on a desk or table during your pregnancy — you'll end up with less back strain and fewer typos too.