For the past 4/6 months on my first day of my period iv been vomiting and can't keep angry on my stomach?

Hmmmmm: Odd that you are now getting this symptom, which i assume you did not have in the past (before 4-6 months ago). Best for you to see the dr, get some routine blood work with an evaluation to assure their is no underlying issues. Some do commonly get nauseous at or around their period, and there is medication you can take preventatively to avoid it. Best wishes.