HI, I really need help, I recieved an orchid as a gift, it was purchased at a local grocery store as an easy to grow orchid. I recieved it after the blooms had fallen off, so its a stick with leaves atm....but I love it....and now one of the leaves is turning yellow. I hate to admit this here but Im the great and terrible plant killer, I have even managed to kill off catctus...and I really am trying with this plant. I was told to water it, only give it two ice cubes a week. I just went and got 20/20/20 plant food, and have not used it yet, I know it needs a bigger pot and have looked into that, but keep seeing different times in which to transplant/transpot...it... Please help.