Yes you should take a probiotic…which one to take is up to you. I personally feel a bit better on HMF neuro when compared to megaflora…
Molybdenum protects from die-off so I would take it if you are taking a probiotic or antifungal.
Die off length varies person to person so there is no way to know how long you may have it. Some people have perpetual die-off if they are not aggressive with antifungals or they have a damaged liver or a different gut flora that has overgrown (such as h.pylori).