In cases with this type of irregular bleeding, first thing to do is to rule out pregnancy
. You can get a urine pregnancy test done. You said that ultrasound
was done, but in cases of very early pregnancy, it may not be conclusive alone. For cases like this, a combination of urine pregnancy test, ultrasound and if neede a blood B HCG
levels will help to arrive at a diagnosis.
If everything is negative for pregnancy, then this can be due to hormonal
Need to consult a gynaecologist.
Hope to have cleared your query.