Cooper has been going through exactly what you have described for the last month or so now, I can now very faintly see a wee white dot on his bottom gum and feel a sharp point so it is definately teething here.
I often rub my finger along his gums and let him have a good chew - he loves it. Also, holding a teething toy in his mouth for him to have a good chew. Also, I got a teething necklace for him and that seems to help too.
I've been putting some bepanthen on his rash/excema now and again and that seems to help that side of things.