From Google -
http://ncnc.essortment.com/whatistoxemi_ruyd.htm :
"Every year thousands of women suffer from pregnancy induced
hypertension. This disease has two names, Toxemia and Preeclampsia. It is estimated that 7 out of every 100 pregnant women will develop Toxemia to some degree. Mild Toxemia is monitored closely and usually causes very little problems for the mother or child. However, when Toxemia becomes severe it can cause many health problems.
There is no known cause for Toxemia. The facts they do know so far include the following. Toxemia starts to develop as your placenta begins to develop, although it may not be detected until the later part of your
pregnancy. Most cases of Toxemia happen with first pregnancies. Second and subsequent pregnancies are at lower risk, unless the woman is with a new partner. Since they don't know what causes it, there is no way to tell if a woman is at risk before she gets pregnant."
Don't worry about the cats, I have 2 house cats and was living with them throughout my pregnancy (live at my boyfriends now btw, so no cats here) but I didn't change their litter luckily, one time I had to I just wore rubber gloves and used a scoop as Wobbles said she did.
I think the only way you'll be affected is if you're not being clean when changing the litter tray, not washing hands etc but don't worry you can still stroke your cats and stuff!! in fact they're very good for you as they calm you down when you stroke them and give you lots of cuddles when you're pregnant.
Hope that helps
