clear?

I recently had my 1 year mammogram (following breast cancer diagnosis and treatment since aug 2014. I had been back to the breast clinic in the meantime with cysts and lumps in both breasts - which I was told the results were normal. When I was diagnosed initially I was told the mammogram was clear even though the tumour was disgnosed as invasive tubular cancer, and then later again after more mammograms DCIS was found and I had a re-excision. I was told I was just unlucky to be in the 10% who don't show up on mammogram. Now I got the results from my latest mammogram of the treated breast (which continues to pain a lot, is swollen and lumpy) and it said 'recent radiology investigations were found to be within normal limits'. Does anybody know if that means 'ALL CLEAR' or something did show up but it was within 'limits'??? I know the tamoxifen makes me over anxious,( and the night sweats, leg cramps and sleeplessness continue!), but I constantly worry about the cancer coming back and not showing up on a mammogram. Any clarification or suggestions would be really appreciated.