Threatened miscarriage


Doctors don’t know what is wrong with me quote out their mouths... I have been having a bloody brown to red spotting for going on 3 weeks now... on Tuesday 7/24 my hcg levels were 204 and Thursday 7/26 they were 285.. just had my blood drawn again and won’t know til Monday what this one reads.. but my last normal af was June 15th! Kinda depressed because they won’t do a ultrasound right now so I have to live with spotting! Has anyone else had something like this happen before? What to do!