Someone HELP ME PLEASE!

I am so distraught. I have some terribly violent coughs. I have tried every cough drop known - nothing works.

On Dec 16th I got a cold, that turned into a sinus infection ( Antibiotics only made it worst in the past) and with it came a cough. I have been coughing for 3 weeks now. My sinus infection cleared the 3rd day doing the hydrogen peroxide flush. - that flush is amazing!

I am doing wheatgrass powder in 8oz of water first thing am. only eating fruits and veggies etc. no meat. (since thanksgiving). oregano oil under tongue.
Black radish and parsley caps b4 meals and olive leaf after meals. drinking copious amounts of water.

I feel like im coughing my brains out and my throat is so sore.

Any suggestions, ideas, advise would be much appreciated.

Thanks.