Sore hips??! Anyone experienced this?

I'm 27 years old and my husband and I have been trying since November. few months. We had a miscarriage in December, I was 7 weeks along. I'm 11dpo and AF is supposed to show tomorrow. I'm not experiencing any sore boobs, but have slight back pain and cramping a little. The past few days my stomach has been feeling tight and my hips have been sore. Has anyone expierenced this? I'm hoping its not AF and just signs of pregnancy!!