I've experienced many of the same side effects described by other...

I've experienced many of the same side effects described by others: weight gain, moodiness, endless PMS. But coming up to the 5 year mark, what i'm wondering about is my feeling of sheer unhealthiness, of a compromised immune system. I have two children 6 and 8 and they finally don't get sick all the time, but in the last year I'm the one coming down with things first and hardest, e.g. they had a cough and I had pneumonia. Anyone else experienced lowered immune system?