Hi Angelina,
Jackie gave you good advice which I'd echo and it does sound like you found this very early on which is good news.
There are many long term survivors here that will give you confidence in going forward, some stage iv and doing well thanks to herceptin and others like myself, who had herceptin five years ago when it was approved for early stage.
It'll become easier when you know exactly what you're dealing with and start a treatment plan. Please keep us posted and I'm so glad you found us