"my experience with yaz wasn&#039;t great. while it eliminated my migraine headaches and made my period shorter, lighter, and diminished pms symptoms - it gave me an awful intermittent tingling sensation in and around my extremities, a dull pain at the base of my skull, vertigo, heart racing and dizzy spells; not to mention a few near syncope experiences - one of which landed me in the er. my obgyn tells me i&#039;m &quot;pill sensitive.&quot; i was on yaz for only three weeks from march-april. i am a 32 year old, slender, busy career-oriented woman. i did not gain weight on this pill. in fact, i believe it suppressed my appetite and i lost about five pounds while on it.  sensitive women may be disappointed. still recovering from scary symptoms."