Just got back from the ER

Brittany

This morning I had a scare where I was bleeding/spotting brownish-reddish discharge. I am currently 11 weeks 1 day. Of course being my first pregnancy I freaked out and went to the ER. My HCG levels were over 75,000 and baby was measuring at 11 weeks 6 days with a heart rate of 169. The doctor said everything was perfect so why the bleeding? Has this happened to anyone else?