Consistent spotting

Hi, anyone with similar experience? About 5 weeks pregnant. I have consistent light pink to red spotting for 6 days. Went to the doctor on 5th day, he did a check and an transvaginal ultrasound. According to doctor, the bleeding was ok. But I’m still worried that this will result in miscarriage. Should I ask for second opinion or get higher dosage of duphaston? #firstbaby #advicepls