Been vaping over a month now...closer to two. But about a month with my EGO, used the mall kind before . Anyway, a few nights ago, I started having migraines. I am prone to vascular headaches as I am in remission from clusterheadaches... but these headaches are like migraines. Have been headache free quite a while now though. I was smoking a pack of basic lights before I started vaping. I have started vaping alot at night and have been using 24mg. I noticed my jaws felt alittle clenched when i went to bed after vaping alot.. Could it be the 24 is too high or could I be allergic to the PG? If it is that the nicotene is too high, can i just get the doubler from TV and reduced it to 18mg? Nighthawk, God bless her, sent me some 24 mg TV and also a bottle of VG .So I can buy the TV doubler and reduce it to 18 mg and if that doesnt work, try smoking just the VG. Has anyone had this happen with the headaches? If so, please give me some suggestions on what to do. Thanks.