Bleeding for the last 9 weeks

Hello has anyone had similar symptoms? I'm 10 months post partum. My periods initially came back normally but for the last 8/9 weeks I've been bleeding. At first it started off as a brown discharge but for the last three weeks it has been very heavy. Changing pads/tampons every 1/2 hours. Completely fed up. I can't exercise, go for a walk or barely even leave the house. I'm so down as im so anxious that im seriously I'll. I booked a gp appointment after 2 weeks. Earliest appointment was 2 weeks after that. She did an examination of me and said it looked normal. She wanted to do a watch and wait for another month. Last week I tried to book another earlier appointment due to the heaviness of the bleeding but next appointment isn't until June so have kept the one I already have which is on Friday. I've had some private hormone tests and thyroid bloods and all have come back normal. What could this be becaus DR Google tells me the worst. Please help.