pulled back muscle

so last year I pulled a muscle; when I got up from the sofa. the pain was so unbearably. I couldn't move sleep or do anything.I went to the doctor the next day.the doctor said that I pulled a really bad muscle in my lower back area.so 1 week later I find out I'm pregnant. I was so happy, but then I had a miscarriage after 2 months. long story short it's been 1 year now. and I feel the muscle pain is coming back.im just wondering if I'm pregnant again. please let me know if anyone experienced the same as a pre-pregnancy symptom.