Should I seek a second opinion on swollen axillary lymph nodes?

Hi there,

I have had what I think are swollen axillary lymph nodes under each of my arms for approximately 4 weeks. Today I went into a walk-in clinic, as I am away at university and can't get home to my regular physician. I should also note that I have an underactive thyroid/ Hashimoto's Thyroiditis. Since January 2011, I have been getting increasingly fatigued and I have also been sick with a cold/flu 6 times. As of 4 weeks ago, I noticed that my armpits were kind of tender so I did a little checking and sure enough, I have swollen nodes under each armpit that feel like lima beans and are about 2cm in diameter. I told the physician today that I have been very tired, my immune system isn't functioning properly, my armpit nodes are swollen, and my breasts are very very sore (more than usual anyway). She took about 10 seconds, pressing VERY hard, under my first armpit and told me that the lump was part of my anatomy. It was incredibly painful. The second armpit she took less time and again told me the lump was part of my anatomy. I know for a fact these lumps were NOT there before as I am very aware of my body. She didn't even schedule any blood work for my thyroid to see if the fatigue I have had for the past 4 months had anything to do with its function and there is NO way I can go home in the next two months to get this checked out. Anyway, does anyone think I should get a second opinion or should I just take her word for it?

Thanks in advance,
Vanessa