confused about herceptin post chemo?

[deborah]

In june of 2004 dx. 7cm.,stage2,her2 with 4 nodes+ out of 14,Tx.12tx.AC,Taxol every 2 weeks x 4tx. ending in nov. and 35 tx. of rads which ended in feb.05. I had my port out in may d/t clotting/discomfort. And today my MD suggests the herceptin, my markers have been ok, CT/Bone scans fine. I have been taken back, I'm worried about the cardiac side effects as well as other potential side effects, and of course I'm wondering why now and not when I was going through chemo this wasn't suggested? Will it help, Is it needed? I have to many questions but I know this is a waiting game and I don't want to be the loser. I'm worried to say the least. Any feedback would be appriciated.