So, in case anybody else is looking for this, here's the recipe:
REBECCA'S ICED MATERNI-TEA
Method: In kettle or large pot on stove, bring water to a rolling boil. Add teabags (I use two teapots and divide the bags among them, then pour the hot water over top) and stir gently. Cover and let steep for 10 minutes. Pour into heatproof jar or thick plastic container, add Splenda and stir until dissolved. Add lemon juice and stir again. Put container in refrigerator until chilled.
In the last five to six weeks of pregnancy, drink 3 glasses daily.
* Splenda (sucralose) is based on modified sugar molecules rather than being a chemical sweetener, and has been certified safe for pregnant and nursing women. However, if you are unconvinced about the safety of such products, just substitute the same amount of regular sugar, or experiment with honey until you get the flavour you like.