Bleeding 🩸 gums 😢

Is it normal to have bleeding 🩸 gums while brushing teeth every day ? I’m bit concerned now because it’s been going on ever since the beginning of my pregnancy until today and I’m currently at 20 weeks. It doesn’t hurt and I brush ever so lightly cos I was afraid as it tends to bleed alot. Previous appointment doctor told me nothing to worry, today another doctor said there might be an underlying issue. I just don’t want it to harm the baby you know... any moms experience this please share with me how u treat it?