I had a scare when I was 5wks....prayer worked for me. My hcg levels were 456 last Monday I prayed and prayed and by Saturday they were 4900. I'm a strong believer that prayer changes things.
My friend had one around 8 weeks. Not to make you scared, but it is kind of out of your hands. Basically her doctor told her either her body will reabsorb it or not. She was lifting weights so her doctor told her not to lift anything heavy and see what happens. All the best.