If you do an enema prior to your liver flush, and can do one afterwards, you should be okay. Go by how you feel on Saturday. If it feels like your body is already doing a lot of work (for instance, raised temperature) you may want to hold off for a week. It's hard to know how much MP is waiting to be released, and once it's been jarred loose you can feel pretty nauseus, and there are planetary aspects going on right now that are increasing nausea and headaches. So stay within your comfort zone! :)