anyone?? please let me know

Did anyone experience lower back pain? I'm having it in the right side, but it's a different kind of pain than I've ever felt, I noticed it when I was doing some laundry yesterday when I was bending. I'm also a smoker and yesterday afternoon I couldn't smoke without coughing and I had flu like symptoms last night. This morning when I was smoking I had to put my cig out because I was coughing so bad and just didn't want it did anyone else have symptoms like this before a bfp? I'm about 8dpo I think I ovulated early this month cause I had some ovulation symptoms.