What Causes Breast Tenderness And Headache While On Yasmin And Cipralex?

I am 22 years old, weigh 57kg but used to weigh 52kg last year. My height is 168cm. I have been on anti-anxiety medication since I was 12. I used to be on the birth control Yasmyn, but changed to Yaz about a year and a half ago. I did not notice the side effects but this year, I have increased breast tenderness, dizziness, headaches and weight gain. I also started Cipralex for anxiety in January of this year, as I attempted to come off my previous medication but could not. My question is why now am I having bad side effects. Is it from the Cipralex or Yaz or the interaction between them?