Constipation w/Die Off Why???

I tend to lean toward the constipation type anyway, but when I take any type of anti-fungal I get constipated very badly. Why does one get constipated with die off??

I also get very constipated when I take any type of probiotics (pills, kefir and cultured veggies). I thought that probiotics are suppose to be good for constipation and help??

This is sooo frustrating since I know to get better I have to get the Candida out but then I get constipated and I feel worse.

I have tried fiber which only makes things worse, increased my water consumption w/o help, senna and other laxatives but they are harsh on my body and I don't want to become dependent, plus they tend to aggravate my IBS.

One would think that one would not be constipated when taking things like probiotics since they are suppose to help our digestive system, it just seems so contradicting.

Can anyone shed some light as to why one gets constipated when taking these things??