Anyone that can help?

Hello, I’m on birth control alesse 28 and me and my partner always use condoms. I take my pill everyday at same time without missing or skipping. We make sure we are carefull and all. But I had my period June 21 up to 26 and it was a normal to light one. The week before my period arrived I had soar breasts and had sex last with my boyfriend which was a couple days before my period arrived. My breasts were normal as soon as my period ended and now a few days ago their started aching and swelling up. And I just have been one week into my new birth control pill pack. This morning I had very light pink eyes n my toilet paper which I found very odd and I’m getting a little scared now. Since that time I haven’t seen any other pink or anything when o wipe. It was really little and very light pink. Anyone else gone through that? Is this normal? Is this a possibility of a pregnancy as both me and my boyfriend are so careful as we aren’t in a position of having a child. Please let me know if you guys had the same situation and what happened? No rude comments please!! I’m a little stressed I’m also on cycle day 14