I'm not due my period for another week however I've had these feelings for over a week now. My breast were/are really sore and now the past few days my nipples have also become sore. I've got gas also a lot more than usual then again I feel I'm eating more than I normally did. I now and again get back ache too. My boyfriend in is the army and was on leave for a month so I began the pill a week before he came home as that's when my period started, I know it doesn't stop contraception straight away but we'd not used anything in over a year so thought it wouldn't make a difference. I've taken a pregnancy test and it can back negative, that was a week ago. All in all I could be anything from 2-7 weeks pregnant if I was. I do get sore breasts when my period starts and that can be 3-5 days before my period or I can get a bad back but both of these symptoms I have now feel different. And I've had them for the last two weeks?? Help