6wks isnt too young, because teeth dont come up straight away they play games with them in the gums, and it can go on for months!!!
Some babies are born with teeth already, others can get their first tooth at 4-5 months, every baby is dierent and being able to go on for months it just is more then likely possible
Z teethed for months before a tooth showed up
I use 'Infants Friend' it does wind but can ease pain of aching gums too...I found Infacol didnt work very good...Ive heard gripe water is good but never used it

Im going to buy a wii fit tomorrow (if i can be bothered to drive half an hour into the shops) to get fitter
I was a size 12 before getting preg and im probably about a 14-16 now