What could this be?

[cabaretmum2b]

I gave birth a month ago tomorrow, and I'm not too sure if AF has come back already or if this is something else?
I had post-birth bleeding for about 3 weeks, which died down to a really really light brown spotting for about the past week. Yesterday, the bleeding came back heavily and bright red, but I haven't really had cramping or anything like that which I usually get on the first few days of AF.
I wouldn't usually worry, but I had to use nipple shields pretty much since Scarlett was born, and she only just started latching on normally a couple of days ago, and the first day she started I felt like I was getting afterbirth pains again.
Also, I had post partum haemorrhaging directly after birth, and lost about 900ml of blood, so I'm still about cautious about anything to do with bleeding.
As I'm exclusively BFing and always have been (and in fact my supply has increased since she's started latching properly) I'd be surprised if I'd started AF only a month after birth!
Does anyone know anything about this?

 

[tickledpink3]

I would check with my doctor if I were you given the previous blood loss. May want them to check to make sure everything was cleared out after the birth