How many does the fever last when the baby is having the first molar?My baby had first first upper molar a week back and is down with fever again and can see her lower gum swollen but so signs of teeth.She has been very irritable and has temperature within 100 every now and then.Also she makes me carry her every night for 2-3 hours as she doesn't want to sleep in bed. Are all these normal teething symptoms and how long do they last?Also can the baby have upper an lower molar with one week difference?