hi everyone have a question I started the pill on sat last week as i had to before i start injections. i had my period one day early but had sore breasts and metalic taste in my mouth before my period i took two pregnanct tests negative. I still have metalic taste in my mouth and my breasts are large and sore i am wondering if it is the pill. however i have used this pill before and had no side effects like this my breasts are so sore and big which is not normal for me once my period has finished and wonder if i do a pregnancy test will the pill interfere? Its so wierd dont understand it at all?