Anyone 8dpo?

I don't know how to explain it... I just feel off! Yesterday I had abdominal twinges? Felt like gas bubbles first, then pinching, then cramping. No spotting. I slept horrible... unusual dreams, I woke up every hour or so feeling so weird with an uneasy feeling, body soreness, abdominal and leg cramping. I've been urinating more frequently and my back is killing me! My nipples don't hurt but they are sensitive. I just don't feel right and I'm kinda worried. Anyone else experience these things? Tested yesterday... BFN.