Why are both of my breasts are paining on the sides?

Hey all, i am a 20 year old girl, i am taking krimson-35 birth control tablets for regularising my periods because my periods were irregular, so doctor suggested me krimson-35 tablets for 3 month course, i am taking these tablets from past 18 days, and from the day i started taking tablets, both of my breasts have become tender and i have a kind of pain on the sides. Is it the side effects of tablets? I am scared help me?

Need to worry, breast tenderness, nausea, vomiting these are side effects of Krimson-35. Take tablets regularly but the timing should be followed that is continued.taken until the strip is completed . 

Src: Yahoo Answers: 
http://in.answers.yahoo.com/question/index;_ylt=AjvJIsq0ZEocy71MF5gmSwiRHQx.;_ylv=3?qid=20130703194003AAeseGX



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