Hello, Alex. I’m afraid I can’t explain why you experience the symptoms you’ve described, but stemming from the descriptions you’ve given, my money is on the mind/body connection.
What I wanted to point out to you is, after you experience these heavy elimination periods, you should take extra amounts of probiotics; the exact amount would depend on what the count of your capsules are and how much you normally take. It wouldn’t hurt to also drink a lot of extra kefir on those days. This should all be done in order to replace the beneficial bacteria that is eliminated during these periods.