I'm 5 wks pregnant and when I took the test last week my breasts were very sore. For the past 3 days or so they don't feel as swollen or painful. Also I had a little light brown discharge the other day. Went to see the doc and my hcg levels were 6223. Just wondering if this is a missed miscarriage. I don't feel nauseous and I dont have to urinated frequently like expected.