I haven't had this procedure but i wanted to chime in that when DD was 7 weeks old XP and i broke up (well, we had a week of back and forth and then decided it was over when she was 8weeks old) and during that week i had 4 consecutive days when i ate nothing. And i mean absolutely nothing. I drank about 1 or 2 litres of water a day (i basically ate and drank when i was hungry and thirsty but i was so distressed by it all i couldn't eat, i just cried all day) but i didn't eat at all. Finally on the 5th day i had some toast and my appetite kicked in hard and i was able to eat normally after that. During that time DD fed in her regular way and i had plenty of milk. In fact i was only thirsty when i fed her so goodness knows what would have happened to me if i'd not been BFing, it was a really hard week.

So though i'd check out the drugs, i wouldn't be overly concerned with having to have a few days of liquids/clear soups as regards your milk supply.

Bx