Lochia bleeding

So

I am 4 weeks 5 days post-partum. Last week my bleeding all but stopped. Then Sunday it started up again red and Im getting little particles of clots. I called my OBGYN and they asked if I bad been busier than normal. I have been on my feet.

I am exclusively breast feeding its too early for a period. They told me to monitor amd if i soak a pad in a hour call back. Its just odd. Has this happened to anyone? I read Lochia should never go back to red.