I had a bad fall and during ct spine also noticed lytic lesions that may not be normal for my age. they then did a mri later and a different doctor didnt see anything but did not use contrast . would they have seen something without contrast?

MRI with or without contrast is not different in detecting lytic bone lesions but CT scan is better than MRI for bone lesion in general. You should discuss with the radiologist who can compare the 2 studies and if needed, a plain spine X-rays can be taken for confirming or ruling out the lytic lesions. We often order bone survey which uses plain X-ray for detecting bone lytic lesions. Good luck.