Our bodies are good at telling us when something is wrong most of the time. It is important to listen to those messages and seek medical attention when specific symptoms arise. The June issue of the Mayo Health Letter covers symptoms that should not be ignored.

Seven symptoms not to ignore:

• Unexplained weight loss: This could be a symptom of such conditions as an overactive thyroid, depression, liver disease, cancer or other noncancerous disorders that interfere with how well your body absorbs nutrients.
• Fever: A fever can point to underlying infections. A fever accompanied by chills or one that is greater than 103 degrees should be evaluated immediately.
• Shortness of breath: Gasping for air or wheezing are medical emergencies. Shortness of breath can be caused by asthma, heart problems, anxiety, panic attacks, or a blood clot in the lungs.
• Severe headaches: A headache accompanied by a fever, stiff neck, rash, mental confusion, seizure, vision changes, weakness, numbness, speaking difficulties, scalp tenderness or pain when chewing are medical emergencies. Causes vary for headaches and may include stroke, blood vessel inflammation, meningitis, brain tumor, aneurysm or bleeding on the brain. Most headaches, are just that, headaches but it is important to know the warning signs for more serious underlying conditions.

Chemo is tough stuff. That's what my oncologist told me the day I tracked her down on the phone and told her how awful I felt. I was weak, dizzy, pale, and as close to incoherent as I'd ever been. I was so out of sorts I was convinced I would jump out of my skin at the very moment this doctor implied all I needed was a firm grip on reality.

"Do you have enough support?" she asked. "Yep," I replied. I told her my mom lives right around the corner, my sister just a few miles away. I told her friends were delivering meals and my husband was coming home from work whenever I called for him. Help was just a phone call away, and I had plenty of it. What I didn't have was medical guidance about how my body was tolerating chemotherapy. That's why I needed her.

I hung up the phone that day having accomplished nothing. And I woke up the next morning barely able to walk. I crawled into my kitchen, grabbed a banana, sprawled out on the floor, inhaled some nutrition, and called my mom. I told her I needed to have my blood examined.

My mom transported me to my oncology clinic -- we had a genetic counseling appointment there anyway so it was convenient timing -- and before long, I was hand-delivered a mask and was swiftly escorted to my very own hospital room where I stayed for five days.

The day I was admitted to the hospital, my white blood counts were 700. My body was not tolerating chemotherapy. And I'll never know why my oncologist didn't know this, didn't call me in for an evaluation when so many signs were presenting themselves, didn't offer me more than her steadfast declaration that "chemo is tough stuff."

Yes, chemo is tough. And there are all sorts of expected side effects of the dreaded treatment that patients must endure. But there are many effects patients should not have to suck up, effects that warrant immediate medical attention and can be alleviated with the right intervention.

It took days of antibiotic treatment and a blood transfusion for my body to recover from its chemotherapy attack. I often wonder what would have happened had I toughed it out at home. I suspect the outcome could have been tragic.

If I ever have the occasion to preach about the dangers of chemotherapy, which is what I am doing here, I offer a firm warning about how difficult the treatments can be, how anyone with any string of worrisome side effects should seek medical help immediately, how any oncologist who doesn't respond to an outright cry for help should be fired.

I learned many lessons from my chemo crusade. I learned how to better help myself, and I learned to report right to the emergency room the second time my blood counts plummeted. I learned to demand the care I deserve, and I found an oncologist who is a warm and caring partner in my pursuit of health. And I learned that chemo is tougher than I ever imagined, too tough for some -- like me -- to go it alone.

In November 2004, my husband I and decided to try to have a third child. But instead of getting pregnant, I got breast cancer. And with the aggressive treatment I would receive -- surgery, dose-dense chemotherapy, radiation, and Herceptin therapy -- becoming pregnant was not an option. Birth control became my only option -- an option that has many limits for premenopausal women surviving breast cancer.