Welcome to our forum, although I'm sorry for the reason that has brought you here. It is good news that your lymph nodes were clear and that the cells surrounding the lump look clear.
Don't be afraid to ask all the necessary questions of your care team so that you can make an informed choice on whether or not to go for chemo. I hope that you manage to reach the right decision for you. Please let us know how your blood tests go and what you eventually decide. We ae always here for you.