Yasmin and step daughter

Both my 19 year old daughter and my 30 year old step daughter were put on Yasmin. Both began having heart problems. The eldest had heart palpitations, a racing heart and dizziness. The doctor discovered that her potassium level had shot up and her magnesium was down. They put her on magnesium to help control the racing heart. It helped, but then she became pregnant and had to lower the dose. The 19 year old has had the worst side effects. She was fine on ortho tricyclene, but when her doctor switched her to Yasmin her blood pressure shot up to 170/118. She began having chest pain. We pulled her off the Yasmin, but she has continued to have uncontrollably high blood pressure. The doctor ran several tests and has found no underlying cause as of this writing. She began taking 5 mg. of Norvasc, but was increased to 10 mg. to manage the high blood pressure.