Bleeding

Hey everyone. I was told i was around 8 weeks. I started bleeding about 5 days after going to the doctor. I rush to the hospital to confirm that everything was good. The ultrasound said that i am 5 weeks pregnant. I have irregular period. Is there any chance that the bleeding could be from the missed period. Its been getting heavier with clots. I only go thru 1 pad. The clots stays inside me until i wipe so its hard to say if it should me more pads. I’ve been bleeding now for 4 days. Should i worried about a miscarriage? Has anyone gone thru this and still had a healthy baby?