Cold Symptoms

Hey Y'all, I am going to preface this by saying I know it's cold and flu season! However at 7/8 dpo I had some slight pressure in my lower abdomen. I also wiped once and had some light brown stuff on the toilet paper. Nothing more really came from that so I brushed it off. On Friday, I had a headache the size of Alaska. I stayed late at work anyway, and came home. My hubby had picked up dinner, and I fell asleep while eating! Yesterday, I woke up with cold symptoms (sore throat, stuffy nose, headache). I took some medicine, and it let up a little bit. It's been the same today, and I also took a 2 hour nap on the sofa. I never do this! AF is due tomorrow, so we'll see if this is PG or just one giant coincidence! Any thoughts or similar stories??