Hi Kelsey,
You mention various things you have used to help your ammonia problem. Beware of anything which claims to 'remove' ammonia. Things which 'detoxify' ammonia are fine as they will most likely turn the deadly ammonia into less harmful ammonium. Your filter will use ammonium in the same way it uses ammonia, so this will not starve your filter bacteria of food. Products which claim to 'remove' ammonia however, bond the ammonia to other substances, effectively removing it from the water. This will starve your filter bacteria of their food (ammonia) and will make your situation worse.
If you have any products which 'remove' ammonia, remove them now. Water changes is the best way to control the situation and don't be scared to do large changes, 50 - 75% or more, if necessary.
Meantime, cut back on feeding as this will help to reduce waste and therefore reduce ammonia levels. You should aim to keep ammonia and nitrite levels below 0.25mg/l (ppm) at all times. Achieve this by doing as many water changes as necessary. Also, as Dorkhedos suggested, mature filter media is a lifesaver in these situations and you should do your best to get hold of some. If you don't know anyone, look
here for someone local to you who would be willing to help out.
Finally, if you can get hold of Bio-Spira, use it. Most other 'bacteria in a bottle' products are useless.
The most important point for now is to keep ammonia and nitrite below 0.25 as i said above. This will give your fish the best chance in the long-term.
Hope this helps you.
Cheers
BTT