We daily drink this water at home also when I was pregnant.
Start boiling 4 cups of water in a bowl and add 1/2 tspn jeeragam(cumin) (Can also dryroast) when the water turns yellowish and boiling off the stove. Drink the water with or without jeeragam. Its good to drink when warm.
Tip - You can dry roast a cup of Jeera/Cumin seeds and just add when water is boiling.