Are sore breasts typical when you are on the pill? I have been using Yasmin for over four years now. Some months I get sore/tender breasts and others I do not. Whenever they get sore, I always worry that somehow I may be pregnant. This month, they even became sore only 8 days after I started my last period. Is it normal for you to get sore breasts when you have been taking the pill this long? Everything I have read says that breast soreness can be a side effect of the pill but that it should subside after a few months of using birth control. Thanks for the help.