cough - left shoulder etc.

Dear doctors, is it possible to seek advice until my classical homeopathist will be back from her holidays?

I have taken Spongia for some time (since May) in LM potencies (from LM6 to LM18) but my coughing has got much worse now.

1) symptoms
a) coughing in the bronchies area. It was in the throat area, too, but Spongia has helped a lot with this (Spongia also helped with the pain in my left knee and my tinnitus, both are gone). Now the cough is located deeper, more in the breast area.
b) sleeplessness at night (can't fall asleep - often only sleep after 2 am or 3 am)
c) hoarseness of voice, it's like I can't do certain frequencies. I can't sing certain tunes, either, while being so hoarse
d) left shoulder, as if inflammation in it
e) headache in front. It becomes worse when there is a cold wind or air-conditioning, e.g. very bad in a coach
f) I do snore in the night, and my husband has confirmed that I always lie on my back while snoring. I only found a couple of remedies for that in the Kent online repertory which I just discovered.
I don't normally remember my dreams.

I'm a 42 year old chubby female. I'm a shy and fearful person. I feel better when it's warm and resting / lying in bed seems better for me than moving around (in fact, this is how I became chubby, when I became ill I stopped doing any sports, because it didn't seem good for me). I'm very sensitive to criticism, unfortunately, this is one of my major negative sides. I also have changeable moods.

I do like eating fish and other fruit of the sea except for mussels and oysters which I can't even try. I like pasta and rice as well. I like drinking hot/warm tea.

As a child, I had measles and chicken pox. Relatively healthy child.

history of homeopathic treatment (not all of these helped, though): Ambra Grisea (helped cheer me up a bit) - Cimicifuga (didn't help) - Pulsatilla (helped with headache) - Lac Caninum ( got a herniated disc in neck area after taking a couple of times) - Arnica (for slipped disc, Hypericum dto.) - Natrium Sulphuricum - Rhus Tox (didn't help with shoulder problem) - Apis (to antidote Rhus) - Hydrastis (no improvement, on the contrary) - Calcium Carbonicum - Spongia

Do I just need a higher potency of Spongia (LM20?) or do I need another remedy?

Thanks for your help. I'll check the thread tomorrow morning.