Hello
Although the doctors have yet to say what exactly causes the headaches, my husband has been getting them for years... Some think they are related to the migrane headaches... My husband just tries to grin and bare the pain.. as medicine doesn't do too much.. he did have an MRI and they didn't find anything.. however, IF you to relieve your anxiety and do decide upon an MRI.. definitely shop around AWAY from hospitals, which charge the most.. we didn't have insurance for awhile and found that there are facilities away from the hospital setting that are just as professional and safe, and who specialize in MRIs and CATSCANS.. also, unlike the hospital, those places will negotiate, particularly if you are playing cash.. e,g,.. my husband had to get a catscan, at the hospital, they wanted 1,000s... at a place we found, 500 dollars... and results within one day, AND.. we also got a copy...
so DO check around..
as for the headache right before your period... I get those too, although not an ice pike, they nonetheless can be annoying... it's from the drop in Progesterone right before your period.. often, Perimenopausal women, such as myself experience the headaches frequently...
what you decide to do, I wish you the best