Recurrence during chemo (first time)

I am wondering if anyone has a similar experience that could share with me a bit more info....I was diagnosed with stage 3 Breast cancer in Sept '14. This was followed by mastectomy, which removed the tumor with clear margins, but with lymph nodes affected (4 of 9). Then started chemo, 4 rounds of doxyrubicin and 4 rounds taxol, 2 weeks apart as opposed to the usual 3, giving me the most 'aggressive' chemo. I started radiation. During the planning scan the Dr picked up something she had never seen before - firstly, because this scan isn't usually sensitive enough apparently to pick up growths, and secondly because it had appeared while on cchemo. She informed me that, while she will change the radiation plan to include this new one (in a lymph node under the collar bone so inoperable) and expects it to work, it means the Cancer is aggressive and resistant to chemo, and that resistance to first line chemo occurs in less than 2% of patients. When I read about chemo resistance online, all I can find is about Cancer becoming resistant over time, which I understand....but nothing about resistance to first line chemo. She tells me that this completely reverses the statistics - I was in the '80% chance it won't recur' group, now I'm in the 80 % chance it will recur group. There is no suggestion that I have 'x' amount of time, but now I feel like I'm a ticking bomb.....though trying to live like I'll be the 1 in 5, that gets really hard some days ... what causes such resistance, and does anyone know of anything new I can try? I have modified diet, exercise, meditate almost daily..... I am now waiting to finish radiation, and then my scan to see if it has worked will only be three months later.