I found some stuff that kills fungus and bacteria that you really ought to try.  The antibiotics don't kill the fungus and you need to kill both.  This stuff does.  You just spray it in your nose and WOW, it got rid of my nasty sinus infection in about a week.  I had tried antibiotics that were specifically prescribed for my sinusitis and I also tried a neti pot (yuk) but just couldn’t get this sinus infection to quit.  So I did a search and found this stuff (Sinus Relief) from Nature’s Rite.  The only problem is that you have to spray it every 30 minutes.  I thought, hey, what the heck, it’s worth a try and every 30 minutes isn’t too bad.  I was really surprised how well it worked so I bought their sinus support too.  It’s been a good moisturizer with calendula and aloe.  It’s herbal ya know.  I like herbal stuff.  So anyway, you should try this for your sinusitis.  It won’t make you have a yeast infection after-words like some antibiotics do.