HELP?? Weird discharge late period

Hello.. I’ve been getting a dark yellow discharge that is kinda thick on the week I was supposed to get my period. I’m late by a day which is but unusual since I usually always get it on the 12th. My bf and I had protected sex (condom) a few times before and he pulled out as well. I also checked them and they were not broken either. Please help :/ could there be a chance that I am pregnant? And what is going on with my discharge