estrogen neg girls

Sorry guess I should have explained myself. I am in a dilema. I was diagnosed at 35 with stage 1 7mm tumor that is er-/pr- and her2 + by IHC. I am a low grade 2 by SBR. I have been told by my onc that I need to retest the tumor to confirm by FISH before I have herceptin as there is a 10% chance that the IHC is wrong...he did say however don't get your hopes up. Here is the dilema. I have found that everyone I talk to is a grade 3. If I am er+ ...which I suspect...that allows me all the hormonal treatments after treatment. The dilema....my tumor is to small to retest both her2+...which is obviously very important...and er status. My onc also said that er status is the nuber one test that is misread and he has found it is often wrong. No standard accross the board I guess. Any way dare I hope? These dicisions are so tricky. Thanks for your reply and help.. Knowledge is power as they say.