Hi and welcome, sounds like you had an unexpected and abrupt entry to our club...sorry for what you are going through now. I do believe that this period of the unknown and waiting witll be THE single hardest time, and then once you have knowledge and a plan, you will regain control and will have the tools to fight. I am over 7 years out from diagnosis, found before I was 31, and my chances of "cure" are excellent. Chemo is very tolerable and was easier than I expected for me, but it impacts each of us differently. Radiation was a picnic compared to chemo, and who knows if you need either.
When will you know more? They will want to remove the tumor to get information tht will determine your treatment and surgery type, then you will be able to research and find what is right for you. Get lots of opinions, take a friend and a tape recorder to the next few doctors' appointments, and take time pamper yourself along this journey.
Keep us posted, we'll get you through this.