I hope the doctor can help me answer some questions about a 5-week pregnancy. Currently, my wife is 5 weeks pregnant (according to the ultrasound). Up to now (July 6, 2021), it has been 3 days since my wife has had brown bleeding, with a small amount of blood. It happens once a day. Occasionally, my wife has back pain (sometimes with dull pain in the left and right abdomen). Doctor, can you tell me if it is okay to have brown bleeding and back pain at 5 weeks of pregnancy? Previously, on July 5, 2021, my wife had an ultrasound and the doctor said there was no problem, but I still feel worried.