Sudden change in reaction to SWF

I am on day 8 of a 10-day Master Cleanse, and have been feeling great. I have been drinking Senna tea every night at bedtime and doing the SWF (Salt-Water-Flush) in the AM every morning with great results.

Today, however, I drank the saltwater as usual, and had an unusual reaction. The water tasted much saltier than before, even though I was careful to use the exact same amount of salt as I do every day. Furthermore, the very second I got the last of it down, I began vomiting violently until all of the saltwater had come back up. Thank goodness I happened to be standing over the sink!

I am confused as to why my body reacted this way today and not any of the days previous? Is it possible that as my body detoxes, it rejects the salt more violently?

I decided not to try and get it down a second time, and instead made another cup of Senna tea. I am open to the idea of just doing the tea for days 9 and 10 as well, except I worry that it won't yield the same results as the SWF. Yesterday I had just gotten past the stage of only liquid eliminations, and as I am finally passing more solid matter, I feel like it is important to continue flushing these last couple of days.

Any input would be greatly appreciated! And to answer the normal questions, yes, I am using uniodized celtic gray Sea Salt , I have adjusted the amount precisely to find which amount works for me, I am drinking it with warm purified water, and I usually chase it with another pint of warm water, only today I didn't get that far.

Thanks in advance!