If your bowels are working and you aren't actively passing worms, you can do a Liver Flush any time. This is kind of a "Catch 22" situation, your bowels function better and parasites are more easily removed when your liver is clean; however Liver Flushing goes better when the bowel is open and there are no parasites in the liver. I still think a liver/gallbladder flush is safe and easy for most first time cleansers. Its also so gratifying to see those stones floating in the toilet. You can do Liver Flushes and Bowel Cleanses while breastfeeding or pregnant as long as you don't overdo it. However, I am not sure about the parasite cleanse. The Wormwood used in most formulas is pretty potent stuff. I would definately ask an expert, perhaps even call the company to be sure its safe.
Paragone is an anti parasite procedure that is done over a period of weeks. Although it uses herbs, it is still potent.