I've had 5 children (one set of twins), I am 36, 125 lbs, 5'3". I found out a few weeks ago I am pregnant again. I started, two days ago, bleeding-light pink on tissue, then some red drops in the toilet, it wasn't much and stopped. My doc did a blood test and the results were 4600, which they said was low for 8 weeks and they will repeat in two days. I am now having pain in my back that radiates down my leg, am I having a miscarriage, or an ectopic pregnancy? I have also had some sharp pain on my left side lower stomach on and off during this pregnancy. Should I go to the emergency room?