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... show more 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?
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