Pain on sides anyone?

We POSSIBLY conceived about 2 weeks ago.. For the past week I have had bad pains on both of my sides - I can only sleep on my back... It's getting more uncoomfortable. Feel like a mix of soreness and shooting pain...also I don't normally cramp with my period and think that is what I am feeling now more in the central part of my torso below the abs as well..  Could this be unrelated to potential pregnancy? (Also breaking out which I normally dont) took a test today that was negative. Any insight is appreciated!