hi, found your post after searching for headaches relating to taking B6. l have been taking a morning sickness formula of B6 and ginger tablet. pretty much straight away a head developed and now after 2 weeks l am thinking l would rather have the nausea - which is hanging around anyway. also taking progesterone pessaries as well and really don't know which is causing the headaches. my last pregnancy l also took the pessaries and no headaches, so thinking must be the B6. did you find the headaches returned, l know your post was several years ago.