An amazing recipe against the pain in the chest when you have to cough a lot, so simple and so effective:
1/2 cup of good quality organic olive oil
1 handful of dried ribwort
1 fresh linen or cotton cloth
1 fresh towel
1 formfitting t-shirt
Put the dried ribwort in the olive oil and very slowly warm the mixture. Do not burn the ribwort! When it is really really warm but not hot enough to burn you, place the fresh linen or cotton cloth on a baking sheet and pour the oil with the ribwort on the cloth. Fold it so that the ribwort doesn't fall out, and so that it is big enough to cover the chest. If the cloth is dripping, gently squeeze the excessive oil out, but don't let it be too dry, you want it really soaked but not dripping! Then place it on your chest, cover with the fresh towel, put on the t-shirt and go to bed.
This helps immensely with the release of phlegm and eases the pain a lot.
I hope this helps.
PS: Can be done without the ribwort too, if you don't have it handy.