Just diagnosed. Understanding biopsy results

Hello ladies. I discovered this board a few days ago and have been pouring over pages to learn all I can. I had an appointment with my BS yesterday and got the biopsy results in person after a call the day after Christmas that I had IDC.

Doc said tumor was 1.5 cm which is small and about the average size for newly diagnosed cases. Here's the specifics of the biopsy results:

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Supplemental Diagnosis

Immunohistochemical stains for hormonal markers are completed on the breast tumor and reveal the following:

Estrogen receptor: Positive; strong nuclear staining in 95% of tumor cells.

Progesterone receptor: Positive; weak to moderate nuclear staining in 20% of tumor cells.

HER-2/neu: Indeterminate (Stain score = 2+) This biopsy will be sent fo analysis by FISH and results will follow in a supplemental report.

Final Pathologic diagnosis

Left breast mass, biopsy:

Infiltrating ductal carcinoma, well differentiated (He could not tell me an official grade until post-surgery but does this mean grade is likely low?)

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Even though the results say HER indeterminate, doc said likely positive, too. hmmmm... Guess I'll need to call in a few days to get supplemental report.

In any event, we talked about treatment options, i.e. lumpectomy w/rad vs mastectomy. Doc said there is only 3-5% recurrence chance of this breast cancer. (IS THAT CORRECT???) And that up to me but encouraged me to NOT take the drastic measure of mastectomy for such a small risk. He said both options treat the whole breast and one wasn't more effective than the other. (IS THAT RIGHT???)

He also said nothing on my biopsy indicated that this was a fast growing tumor and nothing on ultrasound before biopsy indicated node involvement. So because of that AND because I'm in process of moving out and leaving my alcoholic and abusive husband in next 3 weeks, I'm going to have a lumpectomy with sentinel node biopsy (is that correct term?) in early February...about six weeks away. I feel this is right move for me at this time. I'd rather go more conservative than drastic initially.

I asked about whether having dense fibrosystic breasts could make diagnosing future lumps & possible recurrence more difficult so might I be better off with double mastectomy. He said as we age breasts get less dense. (IS THIS CORRECT?)

In the meantime, I'm increasing vegetables in my diet which is already no sugar, no dairy, no grains. I'm also increasing flaxseed, vitamin D, and turmeric supplementation. I'm also going to start drinking more green tea.... all in effort to keep environment anti-cancer!

Thanks in advance for any help with my questions