2004 toyato camry front end vibration and loud noise

My 2004 toyota camry starts making a noise and
starts vibrating my steering wheel once i hit 40 and
gets worse as i accelerate. Its hard to stay straight
feels like it pulls to the left an to the right. Gotten
both front tires changed 3 times already and the
ones on there now are also brand new. Any ideas
as to what this can be ? Someone told me
something about the wheels not being balanced or
something like that. The way it feels is like the
wheels dont stay rolling straight theh just wobble
its hard to drive and i have a child.  Im so nervous