Just before my radiation therapy began, my oncologist ran through a long list of potential side effects I might experience from the treatment. The only two significant short-term possibilities were fatigue and burned, blistered skin -- I went on to encounter them both -- but there were other more long-term effects my doctor told me might one day creep up on me.

She told me the range of motion in my arm might be compromised -- it was -- and that lymphedema or swelling could occur -- not yet -- and that I could feel numbness and tingling in my arm -- I do -- and that I should forever take precautions on the left side of my body. No needle sticks, no blood pressure cuffs, no excessive lifting -- all because of radiation and the missing lymph nodes that further complicate matters.

My doctor also told me that while radiation would target one intended area -- my left breast, just where my cancer was found -- other areas would suffer some degree of exposure. My heart, my lung, and my ribs all bordered the location of my tumor and despite measures to protect these areas, they would be zapped, at least minimally.

This all seemed a bit overwhelming 18 months ago when it came barreling at me. But something fortunate happened with the passage of time -- I began to forget about most of this. And while this a blessing really -- to not be burdened by the what ifs -- I realized yesterday when my three-year-old son kicked me with all the force he could muster right in my ribcage that I really must remember the side effects of radiation -- because they could serve to haunt me at any moment.

I remember clearly now my oncologist telling me that my ribcage could be damaged by radiation in such a way that an injury to the area could easily result in broken ribs. But I don't think about this regularly. And I wasn't thinking of it when I snuggled up to my 35-pound baby boy, knowing full well he could strike at any time. But not until he struck did I recall one of the downsides of radiation.

I feel happy and healthy and strong. Like cancer never landed in my lap and threw me for a loop. But somewhere in the back of my chemo brain -- an entirely different side effect story -- I must remember the dangers of the treatments that are keeping me alive. Because the last thing I want is another complication from cancer. I just want smooth sailing -- and smooth snuggling.

Herceptin -- a targeted breast cancer drug used to treat women who are Her2 positive -- has received rave reviews and has shown great promise in cutting down on recurrence of this aggressive form of breast cancer. Given over the course of 52 weeks, Herceptin is wondrous for its lack of short-term side effects. There is no hair loss, no compromise of blood counts, no significant sickness. For me, fatigue may have resulted from this treatment -- but it's unclear to me really whether it was the Herceptin or the two small boys I have living in my house that most contributed to my occasional exhaustion. Regardless, I functioned well while receiving Herceptin for the past year -- and I did not suffer anything more than a twinge of pain when my port was accessed for each treatment. In the short term, I have fared well. In the long term, the jury is still out.