Dear neatfreakmom: It is likely that most, if not all, of the DCIS has been removed, even though the margins are positive. It is highly unlikely that residual DCIS will cause any problems in the immediate future. Having said that, you mention that your family was told it was healthy tissue on the day of surgery. Certainly, this was not a final pathology. This was either the surgeon explaining that all the tissue appeared to be healthy breast tissue or a frozen section (one small sample) given to pathology to give a "quick opinion" as to the pathology. Neither would be considered the final word. A final pathology would mean taking samples from the entire tissue that was removed and analyzing all of these and this rarely happens on the day of surgery. So, there probably is no reason to distrust the pathololgy department as pathology is never final until its final.
You have chosen aggressive surgery for your problem. The decision to have reconstruction is a personal one. If you are having a bilateral mastectomy, the result can be a bit startling at first, regardless of whether reconstruction is begun. From a medical standpoint, waiting until the end of March is probably perfectly safe. However, I am concerned for your mental health. This is a long time to be as worried as you seem to be. You need to consider what will give you the most peace of mind and proceed in that direction. You should not be afraid to discuss your concerns with your doctor. Perhaps you could discuss the pros and cons with him/her.
I actually changed my surgeons based upon my oncologist recommendation. I believe that made everything better for me. I went with the reconstruction at the same time that I had my bi-lateral mastectomy, for me it seemed like the best way to go.
I found that I was able to deal with everything that was happening to my body and emotionally better knowing as soon as chemotherapy was over we would finish the final step for the reconstructive surgery. Keep in mind that reconstructive surgery assuming you chose implants as I did...takes several months. For me it was completed about 3 months after the completion of chemotherapy.
I hope this was helpful to you!