Does a bilateral breast mri's also see if lymph nodes are ok?

Maybe: The axillary nodes (actually the whole chest and upper abdomen) are included in the bmri images but the test is focused on the breast tissue. The bmri may show enlarged or even abnormal (lacking normal architecture) nodes but can't definitively tell if there are cancer cells present. The normal healing/inflam response to bx will swell nodes. Pathologic eval/biopsy of the nodes is definitive.

Yes: Most breast MRI exams will include lymph nodes.

Grossly abnormal: lymph nodes(enlarged, distorted) are easily detected by MRI. However, MRI cannot detect microscopic invasion of lymph nodes. Also, lymph node enlargement is non-specific, meaning there can be benign reasons for enlargement. So, MRI is not considered definitive for lymph node evaluation, although it can be very helpful.