Yes Amoxicillin is a very general one & if they keep giving you the same but not strong enough dose to clear it properly, even the bugs it will work on will become resistant to it, so its never going to work
the NHS Drs don't recognise the fungal type sinus infections I'm afraid, I've asked already, as I have wondered if that could of been my problem & anti Bs making it worse - instead of better - so your probably best not mentioning that, GPs can get a bit funny at times
-
there are other types of bacterial infections though, some quite rare, the one mine have sometimes turned out to be were & they do need specificl antibiotics.
Sorry, tired & not thinking too clearly - what exactly do you mean by "rebound problem"??
you sound as if you do have a very bad one still, so I wouldn't use the neti douche I mention above right now - they are great when sinuses aren't too stuffed up & swollen, as help wash the infection away - & a VERY mild solution of vinegar, few drops only can help then prevent infection - but it can hurt, but only temporary & as you've probably realised, you do get desperate & will try anything - but using a rinse when sore stuffy & swollen I've found can push the infection into your ear & make things worse - so hold off with that until later.
The Sprays are different though, & they CAN help quite a bit, so DO try it - but not everyone gets on with them, I couldn't handle the Otrivine at all, but do find I can cope with Nasonex - might be worth you asking for that, as it is a newer one & I find much better -
& if your GP hasn't already told you - several didn't explain to me
its also important that when you use the spray, you hang your head upside down & pump the spray right into the back of your nostrils as far as you can go - & hold there for a few minutes to allow the Nasonex/Otrivine to seep right into the sinus cavities & do its job - which will be to reduce inflammation, & some are a bit antibacterial, so will help kill the bugs too - they back up the antiBs:)
Are you also taking Ibruprofen??? - if not you should, its the best pain killer for sinuses & reduces swelling, so relieves headaches & allows infection to drain away - the spray helps the draining too, which is very important to help clear the infection completely:)
Also you might want to try a few acupressure massage techniques, they can really help open up your sinuses & help you breathe again -
in this link - the guy in the video shows a few points around your nose, I've found all 3 of these very useful for instant temporary relief www.ehow.com/video_4983669_use-acupressure-points-sinus-relief.html
& this one is also great- 1. Nose Rub : Rub your hands together to warm them up. Use the palm of one hand to rub the tip of your nose in a circular motion, 15-20 times, then another 15-20 times in the opposite direction. Do this several times a day for sinus problems, nasal congestion and stuffy nose, and regularly as a preventative.
theres plenty more if you google, but these are the ones I personally find most effective - these & direct pressure in circular motion over each of your 4 Sinus cavities
I hope you find some of this gets you some relief, you sound in a bad way, & I know from experience its awful :(
good luck