Spouse and I had unprotected sex a day after my period was over and finished in me about 2 weeks ago, I took plan B two hours after. My period is also going to start (hopefully) next week but I’ve noticed I’ve been tired more, boobs aching like crazy, and my cervical mucus has been egg white/creamy since then. Is there a possibility that plan b failed? I’m planning on taking a pregnancy test soon as well.