Dear Janice,
I am new to this message board and just saw your message. It is SO important for you to receive proper follow-up treatment! YES, you need bloodwork as well as Tamoxifen or some other medication (I forget the name of the other medication available for breast cancer patients following surgery/chemo/radiation--I believe there are only two). You may want to consult with another oncologist or other physician if you are not receiving proper follow-up care.
I am not a physician, but have done extensive reading because--after all the suffering I've seen and experienced first-hand--I don't blindly trust doctors anymore. Please don't hesitate to contact me and I can give you more info.
Best Wishes,
~Leslie