I was put on Yaz because of my severe PMS. After nine days I started getting very strong symptoms, many the very symptoms I started taking Yaz for in the first place. It was too early in the cycle to be the "regular" PMS. Many of the symptoms I listed below I get regularly but not as strongly, and they have not been remotely this bad for years. I stopped taking Yaz after freaking out for 48 hours. I was told to stay on them for at least 3 months, as a trial, and I was really motivated because I really suffer from my PMS - almost every month I feel like I get into a depression - but there is no chance in the world I will continue taking that pill.
Tiredness
Sudden feelings of worthlessness
Sudden feelings of intense anger
Sudden feelings of anxiety
Sudden feelings of deep sadness
Tension head aches
Crying uncontrollably and for no obvious reason
Tension in jaws/clenching of teeth
Tension in shoulder/neck area
Feeling unable to cope with work
Feeling unable to communicate with anyone
Shortness of breath
Not able to sleep (though tired)
Very strong heart beat
Numbness in skin
Much lower energy
Eating extreme amounts of chocolate/cookies