Am I being stupid, 2/3 tumours but want breast conservation

You are not being stupid. I'm actually amazed that you are calm enough to do your research. Good for you. I had 2 lobular tumors, one 2cm and the other 9 mm on opposite sides of the left breast. Struggled with the decision. Husband happens to be a plastic surgeon who has known and loved these breasts for more than 30 yrs yet he was convinced that I'd be left with a 'Swiss cheese' breast even with the best of efforts. I was also releived that a mx means no second surgeris for wider excisions if needed and no radiation. Reconstruction can be more difficult on a breast that's been irradiated should you need to reconstruct later. So I don't regret my decision. I kept the right breast which is being watched closely with MRIs. Glad I did as at least there is sensation on one side. Flip side of everything I've said is that I miss my lost breast badly and do worry about the other one. So there is no easy answer here. I felt strongly that I wanted a breast that hid these things so stealthily, OFF. Not much science there...good luck, we are with you.

If you are large breasted you might be able to have a reduction/ lumpectomy where they take a lot.