Girls, hi! Have you ever encountered such a situation? I recently foun…

Girls, hi! Have you ever encountered such a situation? I recently found out that I'm pregnant. Last week on ultrasound they found a yolk sac 7 mm but didn't see any yolk sac or embryo, they said to come back in two weeks for another ultrasound. Yesterday I went for blood test and flew to the doctor. Ultrasound was done - yolk sac 5 mm... by evening already started period specifically... In this case, should we wait until everything comes out or is it better to have a medical abortion? The doctor said to go for an ultrasound on day 5-7 of the cycle, nothing more she said... Has anyone experienced something similar?