Question about remaining breast

blondie45

In April I had MRI on both breasts. A 1.4 cm tumor was found in the right breast done by the chest wall so had mastectomy on that side. On that April MRI the left breast was totally free of any cancer. I wanted bilateral mastectomy but insurance would not pay for it. Had chemo starting end of May with AC and then Taxol and now have no more periods. The remaining breast is very tender and I just freak out about any pain in that breast after the experience with the right breast and mastectomy, etc.  My question really is that since my MRI was 8 months ago showing the left side clear, could something already have developed and started since then in the left breast? I did see my gyno about 6 weeks ago who found no lumps whatsoever.