GERD causing otitis and sore throat

Hi,
I have a severe condition due to systemic candida after 11 antiobitics in 2 years, including a IV one. I have mercury poisoning on the other hand and much more problems, but I am writing for one specific problem. I have severe GERD, which used to be controlled by Nux Vomica 9 CH and Robinia Pseudoacacia 6 CH, but not anymore. My throat is constantly inflamed and sore from a week or so, but as well are my ears, and especially one of them. The inflammation is weak and occurring from time to time, but most likely after eating. I am 100% sure the otitis is from the GERD.
Now, I am seeing a homeopath, but he is prescribing me Mercurius remedies. I am a strong believer that they maker my body try to expell the mercury and a redistribution occurs, which makes me much, much worse. Since I have started Mercuris 2-3 months ago my overall health went down like 10 times, my sound sensitivity and emotinal instability went off the roof as well. I am doing a chelation with chelators to get the Mercury out following Andy Cutlers protocol, so I will deal with it.

Please, advise me something which is not Mercurius and which can help me. And please, if possible, low potentions (modern homeopathy).
I am using drops remedies without alcohol, as I can even not tolerate the pills due to the sugar in them due to the candida. My homeopath says 3 drops equal 1 pill, do you think the same?
I am not a homeopath, but from what I read, I am considering Kalium Muriaticum 9 CH, 5 pills (15 drops) once in the morning, shall this help?
To summarize: weak, occasional, but worsening lately, especially after meal, pains in chest, throat, inside ears (there are short, but stronger pains), and also outside ears, sometimes transfering like on lines to other poins of the left part of my head, including eye, where is the worse ear, but everything starts from it, and everything gets activated from the GERD.
P.S. I am currently taking the Nux V and Robinia Ps., which were working perfectly in the beginning, but now not, so looking into the GERD would be wise as well I guess.
Many thanks.