Lymph nodes

hi gals. Ive had my mastectomy 14mnths ago, triple neg, did 16 rounds chemo n 25 radiation. Got through it ok, now 6 mnths later, accute lyphodema. My arm  is huge and painful and swelling across chest, dark burgundy/black patches on skin. Had scans galore and mri has detected cancer in some of remaining nodes. Going for PET scan friday. Wont know till next wednesday all gory details. So, my question is to anyone out there is .....has anyone had re-occurance of their breast cancer 6mnths after treatments and in nodes? Im getting all sorts of scary vibes, not quite saying, but basically, im stuffed by all involved. Id love to hear from someone that may have had similar situation. Its a long shot i know. Thanks for this forum that gave me a chance to vent at least. Cheers