I'm not sure what you mean by feeling worse but....
I can say that my longest fast was only about two weeks.
I had tough time days 1 and 2, easy on 3, 4, 5, 6, 7, 8, and killer time again on days 9, 10 and 11, then easy again.
From what I've read, if you do longer cleanses, your body goes through a number of cleaning periods and possible healing crisis.
I'd advise you to make sure your're drinking enough of the lemonade, increase your water intake also. Many times the second healing crisis is more intense, because those toxins have been in your body longer and may even be more concentrated.
Just my thoughts. Be well and I hope you stick with it.
PS..I think it's important to end a cleanse/fast when you feel good about it, not when it's hard. But you need to trust your inner voice. I'd say if increased leonade and water dont help...oh, you're still dong the flushing daily and perhaps even doing the B&P? you might just need to detox more.
I hope other people elect to answer your question also.