Vitamin B6 alone working for you?

hello everyone,

I am now 10 weeks and have had nausea 24/7 since about the 6th week (vomitting came the 7th week) my dr prescribed Diceglis which I took that night (about 9 weeks) and woke up with a terrible headache and extremely lethargic. Due to those symptoms I refused to take it again. 

After searching I found that Diceglis is vitaminb6 + unisom. 

Have any of you had luck with just vitamin B6 alone to relieve morning sickness ? If so what dosage did you take and how often?