Scared

Hello! I came to ask questions from people who have experienced pregnancy and early symptoms. A week ago I had intimacy with my boyfriend and I had taken a plan action afterwards because he didn’t pull out, but like a bunch of dumb hormonal teenagers we did it again an hour later except he didn’t pull out fast enough and I didn’t have a chance to get a new one. I recently took a pregnancy test before my period came and it came out negative and I took another on the day it should’ve came but still negative. My period now is 3 days late and I’m aware any type of pregnancy prevention pills delay periods but my breasts have been tender way more than usual to the point they hurt with or without a bra on. I’m not sure if this is a symptom of the pill or I’m pregnant. Any thoughts? Feel free to ask questions:)