Did anybody have severe cramping and on and off sharp pains in the stomach and in back? I'm three weeks pregnant exprence all this and I went to er and they did a ultrasound said they didn't see anything in my tubes as of now or really couldn't see anything all! My levels are 130 and told me to find a ObGYN and be tested again Wednesday and see if they double! Is this coming or does this sound like a miscarriage or a tubal