I need some advice/reassurance etc...

I think DD has starting teething already...

We have had the unsettled nights and only having minimal cat naps during the day. She is normally a very happy chatty baby, but now all the chatting seems to be cranky and whingy and she is having random bursts of crying. She is chewing her hands and fingers lots and is becoming very reliant on the dummy for sleep and the amount of drool leaves puddles as well. Now for the yucky part... Her nappies are horrendous, they were always quite bad but now they are enough to get the gag reflex happening and they are going all the way up her back. I've noticed that her lower gums are very white but no blisters as yet and also she has developed this unpleasant aroma about her which smells like strong urine (even with a clean nappy on). Does it seem like teething?? If so, what do you recommend to help?? I've purchased an Amber teething necklace and tried it on her but she complains even more with it on which is doing my head in?? Some ideas would be great.