Im a 70 resto druid just started raiding wit my guild. i havnt been in this spot but want to know incase it does happen. what if where in a 5 man instance and the tank is begining to fight a boss and his health is going down pretty guick and i have to heal him but he doesnt have enough threat yet. so do i heal him and i pull aggro and i die but if i dont the tank will die and the group will wipe so what should i do?

thanks

If your tank is dieing that fast he's not geared enough to tank that instance. You are NOT going to pull aggro from healing as long as he hit it once. On a side note, 5 points in subtelty helps.