I just got back from the doctor. She did a visual/manual exam and confirmed that there are no lumps in my breasts. I also had her look at my foot, still blistered from last Thursday, and she said that it's not infected and will be fine, and that I should take off my shoes when I got home, which I did.
Also, my blood pressure is 110/80, which is the lowest I can ever recall it being measured at, and a pleasant surprise given the amount of worry and stress in my life right now. The blood tests from the last visit are also fine: she specifically mentioned that the thyroid is good and my cholesterol is 188, which she said is a good number.
So I bought bagels and came home.