Bleeding and 7 weeks of pregnancy ...

Good morning I'm pregnant (7 weeks) in the first days I had a strong bleeding, I went to the doctor I did the ultrasound transvaginal and the doctor said that everything seemed normal, but that could not say much because the baby was not yet formed. a little bag, asked me to come back after two weeks when the baby would already be formed and gave me ultroges to take twice a 12 every 12 hours, but every day when I pee (not every time I pee) I see that the toilet paper dirty just a little blood, I wanted to know if it's normal? because I'm very worried ... thank you in advance if you can help me ...