I am sorry to hear about all of your sinusitis problems. Both my wife and I suffered from sinusitis for years and tried everything but nothing worked. We have been using a nasal spray made in the UK called SinuSoothe for the last 5 months and now we rarely get troubled by sinusitis. It is completely natural and we did not suffer any side effects. It has been a revelation and we recommend it to anyone who is bothered by sinusitis. It also treats hayfever, allergies etc. but I do not know if it works for these. It relieves the sinus pain,pressure and headaches you get with sinusitis and is supposed to kill the bacterial and fungal infection that causes it in the first place. We swear by it and purchased it by sending an email to the SinuSoothe website.
I would also recommend supplementing your diet with natural ant-inflammatories such as turmeric, ginger and omega 3.
P.S. I suffered from dizziness and fatigue when my sinusitis was at its worst however looking back now I think I was also suffering from adrenal fatigue. I would recommend anyone suffering from these symptoms to search the internet as their is a lot of great advice on how to remedy it. Remember both sinusitis and adrenal fatigueare caused by stress so it is possible to have both at the same time. I also had bowen therapy which is a non invasive treatment that rebalances the body and makes you less prone to being stress.
Now that I am back to full fitness these things I have overcome have made me a stronger person.
Please keep an open mind and remember that every cloud has a silver lining.
Good Luck!