IM FREAKING OUT

I had sex with my boyfriend twice this month. Both times we used a condom the entire time, he pulled out before being anywhere close to finishing, we filled the condoms up the water to make sure there were no holes which there were none, and on top of all that I take my pill at the same time every day. My period is coming in 5-6 days and I’m having a little bit of yellowish-reddish discharge and I have sore boobs, is this a sign of my period coming or am I pregnant???