Ovarian Cancer - will be having a full hysterectomy next month. Feeling very anxious, fearing the unknown

Recently been diagnosed with Ovarian Cancer, most likely stage one?  Things are moving very quickly though and looking to have a full hysterectomy mid February.  I was feeling fine up until the reality kicked in and what’s about to happen.   Feeling very anxious at this moment.  Fearing the unknown, I suppose.