Can a blood sugar reading of 70 and lower cause a migraine?

My dr, a couple years ago, took my blood after i faster and when the result came back he said i was " borderline diabetic". I haven't gone took the dr in a long time but I was wondering if a blood sugar level that is 70ish or lower can cause bad migraines (to the point of nausea) and shakiness (and sometimes feeling like your muscles are limp/ thing feel surreal). I ask because the last time i had a migraine a friend mention something about when was the last time i ate..so i tested my blood now just out of curiousity since a migraine just started (this is the 2nd time i tested) and its below 70..I though that that range was normal but not sure cause it confuses me. any input would be helpful. thanks